diff mbox series

libcpp: Improve location for macro names [PR66290]

Message ID c1159f0f4715cc7a55e11f6b088419f9087854d0.1659714207.git.lhyatt@gmail.com
State Committed
Headers
Series libcpp: Improve location for macro names [PR66290] |

Commit Message

Lewis Hyatt Aug. 5, 2022, 4:04 p.m. UTC 
  When libcpp reports diagnostics whose locus is a macro name (such as for
-Wunused-macros), it uses the location in the cpp_macro object that was
stored by _cpp_new_macro. This is currently set to pfile->directive_line,
which contains the line number only and no column information. This patch
changes the stored location to the src_loc for the token defining the macro
name, which includes the location and range information.

libcpp/ChangeLog:

	PR c++/66290
	* macro.cc (_cpp_create_definition): Add location argument.
	* internal.h (_cpp_create_definition): Adjust prototype.
	* directives.cc (do_define): Pass new location argument to
	_cpp_create_definition.
	(do_undef): Stop passing inferior location to cpp_warning_with_line;
	the default from cpp_warning is better.
	(cpp_pop_definition): Pass new location argument to
	_cpp_create_definition.
	* pch.cc (cpp_read_state): Likewise.

gcc/testsuite/ChangeLog:

	PR c++/66290
	* c-c++-common/cpp/macro-ranges.c: New test.
	* c-c++-common/cpp/line-2.c: Adapt to check for column information
	on macro-related libcpp warnings.
	* c-c++-common/cpp/line-3.c: Likewise.
	* c-c++-common/cpp/macro-arg-count-1.c: Likewise.
	* c-c++-common/cpp/pr58844-1.c: Likewise.
	* c-c++-common/cpp/pr58844-2.c: Likewise.
	* c-c++-common/cpp/warning-zero-location.c: Likewise.
	* c-c++-common/pragma-diag-14.c: Likewise.
	* c-c++-common/pragma-diag-15.c: Likewise.
	* g++.dg/modules/macro-2_d.C: Likewise.
	* g++.dg/modules/macro-4_d.C: Likewise.
	* g++.dg/modules/macro-4_e.C: Likewise.
	* g++.dg/spellcheck-macro-ordering.C: Likewise.
	* gcc.dg/builtin-redefine.c: Likewise.
	* gcc.dg/cpp/Wunused.c: Likewise.
	* gcc.dg/cpp/redef2.c: Likewise.
	* gcc.dg/cpp/redef3.c: Likewise.
	* gcc.dg/cpp/redef4.c: Likewise.
	* gcc.dg/cpp/ucnid-11-utf8.c: Likewise.
	* gcc.dg/cpp/ucnid-11.c: Likewise.
	* gcc.dg/cpp/undef2.c: Likewise.
	* gcc.dg/cpp/warn-redefined-2.c: Likewise.
	* gcc.dg/cpp/warn-redefined.c: Likewise.
	* gcc.dg/cpp/warn-unused-macros-2.c: Likewise.
	* gcc.dg/cpp/warn-unused-macros.c: Likewise.
---

Notes:
    Hello-
    
    The PR (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66290) was originally
    about the entirely wrong location for -Wunused-macros in C++ mode, which
    behavior was fixed by r13-1903, but before closing it out I wanted to also
    address a second point brought up in the PR comments, namely that we do not
    include column information when emitting diagnostics for macro names, such as
    is done for -Wunused-macros. The attached patch updates the location stored in
    the cpp_macro object so that it includes the column and range information for
    the token comprising the macro name; previously, the location was just the
    generic one pointing to the whole line.
    
    The change to libcpp is very small, the reason for all the testsuite changes is
    that I have updated all tests explicitly looking for the columnless diagnostics
    (with the "-:" syntax to dg-warning et al) so that they expect a column
    instead. I also added a new test which verifies the expected range information
    in diagnostics with carets.
    
    Bootstrap + regtest on x86-64 Linux looks good. Please let me know if it looks
    OK? Thanks!
    
    -Lewis

 libcpp/directives.cc                          |  13 +-
 libcpp/internal.h                             |   2 +-
 libcpp/macro.cc                               |  12 +-
 libcpp/pch.cc                                 |   2 +-
 gcc/testsuite/c-c++-common/cpp/line-2.c       |   2 +-
 gcc/testsuite/c-c++-common/cpp/line-3.c       |   2 +-
 .../c-c++-common/cpp/macro-arg-count-1.c      |   4 +-
 gcc/testsuite/c-c++-common/cpp/macro-ranges.c |  52 ++
 gcc/testsuite/c-c++-common/cpp/pr58844-1.c    |   4 +-
 gcc/testsuite/c-c++-common/cpp/pr58844-2.c    |   4 +-
 .../c-c++-common/cpp/warning-zero-location.c  |   2 +-
 gcc/testsuite/c-c++-common/pragma-diag-14.c   |   2 +-
 gcc/testsuite/c-c++-common/pragma-diag-15.c   |   2 +-
 gcc/testsuite/g++.dg/modules/macro-2_d.C      |   4 +-
 gcc/testsuite/g++.dg/modules/macro-4_d.C      |   4 +-
 gcc/testsuite/g++.dg/modules/macro-4_e.C      |   2 +-
 .../g++.dg/spellcheck-macro-ordering.C        |   2 +-
 gcc/testsuite/gcc.dg/builtin-redefine.c       |  18 +-
 gcc/testsuite/gcc.dg/cpp/Wunused.c            |   6 +-
 gcc/testsuite/gcc.dg/cpp/redef2.c             |  20 +-
 gcc/testsuite/gcc.dg/cpp/redef3.c             |  14 +-
 gcc/testsuite/gcc.dg/cpp/redef4.c             | 520 +++++++++---------
 gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c      |  12 +-
 gcc/testsuite/gcc.dg/cpp/ucnid-11.c           |  12 +-
 gcc/testsuite/gcc.dg/cpp/undef2.c             |   6 +-
 gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c   |  10 +-
 gcc/testsuite/gcc.dg/cpp/warn-redefined.c     |  10 +-
 .../gcc.dg/cpp/warn-unused-macros-2.c         |   2 +-
 gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c |   2 +-
 29 files changed, 405 insertions(+), 342 deletions(-)
 create mode 100644 gcc/testsuite/c-c++-common/cpp/macro-ranges.c

Comments

Lewis Hyatt Sept. 15, 2022, 10:31 p.m. UTC | #1 
Hello-

https://gcc.gnu.org/pipermail/gcc-patches/2022-August/599397.html
May I please ping this patch? Thank you.

-Lewis

On Fri, Aug 5, 2022 at 12:14 PM Lewis Hyatt <lhyatt@gmail.com> wrote:
>
>
> When libcpp reports diagnostics whose locus is a macro name (such as for
> -Wunused-macros), it uses the location in the cpp_macro object that was
> stored by _cpp_new_macro. This is currently set to pfile->directive_line,
> which contains the line number only and no column information. This patch
> changes the stored location to the src_loc for the token defining the macro
> name, which includes the location and range information.
>
> libcpp/ChangeLog:
>
>         PR c++/66290
>         * macro.cc (_cpp_create_definition): Add location argument.
>         * internal.h (_cpp_create_definition): Adjust prototype.
>         * directives.cc (do_define): Pass new location argument to
>         _cpp_create_definition.
>         (do_undef): Stop passing inferior location to cpp_warning_with_line;
>         the default from cpp_warning is better.
>         (cpp_pop_definition): Pass new location argument to
>         _cpp_create_definition.
>         * pch.cc (cpp_read_state): Likewise.
>
> gcc/testsuite/ChangeLog:
>
>         PR c++/66290
>         * c-c++-common/cpp/macro-ranges.c: New test.
>         * c-c++-common/cpp/line-2.c: Adapt to check for column information
>         on macro-related libcpp warnings.
>         * c-c++-common/cpp/line-3.c: Likewise.
>         * c-c++-common/cpp/macro-arg-count-1.c: Likewise.
>         * c-c++-common/cpp/pr58844-1.c: Likewise.
>         * c-c++-common/cpp/pr58844-2.c: Likewise.
>         * c-c++-common/cpp/warning-zero-location.c: Likewise.
>         * c-c++-common/pragma-diag-14.c: Likewise.
>         * c-c++-common/pragma-diag-15.c: Likewise.
>         * g++.dg/modules/macro-2_d.C: Likewise.
>         * g++.dg/modules/macro-4_d.C: Likewise.
>         * g++.dg/modules/macro-4_e.C: Likewise.
>         * g++.dg/spellcheck-macro-ordering.C: Likewise.
>         * gcc.dg/builtin-redefine.c: Likewise.
>         * gcc.dg/cpp/Wunused.c: Likewise.
>         * gcc.dg/cpp/redef2.c: Likewise.
>         * gcc.dg/cpp/redef3.c: Likewise.
>         * gcc.dg/cpp/redef4.c: Likewise.
>         * gcc.dg/cpp/ucnid-11-utf8.c: Likewise.
>         * gcc.dg/cpp/ucnid-11.c: Likewise.
>         * gcc.dg/cpp/undef2.c: Likewise.
>         * gcc.dg/cpp/warn-redefined-2.c: Likewise.
>         * gcc.dg/cpp/warn-redefined.c: Likewise.
>         * gcc.dg/cpp/warn-unused-macros-2.c: Likewise.
>         * gcc.dg/cpp/warn-unused-macros.c: Likewise.
> ---
>
> Notes:
>     Hello-
>
>     The PR (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66290) was originally
>     about the entirely wrong location for -Wunused-macros in C++ mode, which
>     behavior was fixed by r13-1903, but before closing it out I wanted to also
>     address a second point brought up in the PR comments, namely that we do not
>     include column information when emitting diagnostics for macro names, such as
>     is done for -Wunused-macros. The attached patch updates the location stored in
>     the cpp_macro object so that it includes the column and range information for
>     the token comprising the macro name; previously, the location was just the
>     generic one pointing to the whole line.
>
>     The change to libcpp is very small, the reason for all the testsuite changes is
>     that I have updated all tests explicitly looking for the columnless diagnostics
>     (with the "-:" syntax to dg-warning et al) so that they expect a column
>     instead. I also added a new test which verifies the expected range information
>     in diagnostics with carets.
>
>     Bootstrap + regtest on x86-64 Linux looks good. Please let me know if it looks
>     OK? Thanks!
>
>     -Lewis
>
>  libcpp/directives.cc                          |  13 +-
>  libcpp/internal.h                             |   2 +-
>  libcpp/macro.cc                               |  12 +-
>  libcpp/pch.cc                                 |   2 +-
>  gcc/testsuite/c-c++-common/cpp/line-2.c       |   2 +-
>  gcc/testsuite/c-c++-common/cpp/line-3.c       |   2 +-
>  .../c-c++-common/cpp/macro-arg-count-1.c      |   4 +-
>  gcc/testsuite/c-c++-common/cpp/macro-ranges.c |  52 ++
>  gcc/testsuite/c-c++-common/cpp/pr58844-1.c    |   4 +-
>  gcc/testsuite/c-c++-common/cpp/pr58844-2.c    |   4 +-
>  .../c-c++-common/cpp/warning-zero-location.c  |   2 +-
>  gcc/testsuite/c-c++-common/pragma-diag-14.c   |   2 +-
>  gcc/testsuite/c-c++-common/pragma-diag-15.c   |   2 +-
>  gcc/testsuite/g++.dg/modules/macro-2_d.C      |   4 +-
>  gcc/testsuite/g++.dg/modules/macro-4_d.C      |   4 +-
>  gcc/testsuite/g++.dg/modules/macro-4_e.C      |   2 +-
>  .../g++.dg/spellcheck-macro-ordering.C        |   2 +-
>  gcc/testsuite/gcc.dg/builtin-redefine.c       |  18 +-
>  gcc/testsuite/gcc.dg/cpp/Wunused.c            |   6 +-
>  gcc/testsuite/gcc.dg/cpp/redef2.c             |  20 +-
>  gcc/testsuite/gcc.dg/cpp/redef3.c             |  14 +-
>  gcc/testsuite/gcc.dg/cpp/redef4.c             | 520 +++++++++---------
>  gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c      |  12 +-
>  gcc/testsuite/gcc.dg/cpp/ucnid-11.c           |  12 +-
>  gcc/testsuite/gcc.dg/cpp/undef2.c             |   6 +-
>  gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c   |  10 +-
>  gcc/testsuite/gcc.dg/cpp/warn-redefined.c     |  10 +-
>  .../gcc.dg/cpp/warn-unused-macros-2.c         |   2 +-
>  gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c |   2 +-
>  29 files changed, 405 insertions(+), 342 deletions(-)
>  create mode 100644 gcc/testsuite/c-c++-common/cpp/macro-ranges.c
>
David Malcolm June 20, 2023, 3:40 p.m. UTC | #2 
On Fri, 2022-08-05 at 12:04 -0400, Lewis Hyatt via Gcc-patches wrote:
> 
> When libcpp reports diagnostics whose locus is a macro name (such as
> for
> -Wunused-macros), it uses the location in the cpp_macro object that
> was
> stored by _cpp_new_macro. This is currently set to pfile-
> >directive_line,
> which contains the line number only and no column information. This
> patch
> changes the stored location to the src_loc for the token defining the
> macro
> name, which includes the location and range information.

Sorry about the delay in reviewing this.

The patch looks good to me

Thanks
Dave


> 
> libcpp/ChangeLog:
> 
>         PR c++/66290
>         * macro.cc (_cpp_create_definition): Add location argument.
>         * internal.h (_cpp_create_definition): Adjust prototype.
>         * directives.cc (do_define): Pass new location argument to
>         _cpp_create_definition.
>         (do_undef): Stop passing inferior location to
> cpp_warning_with_line;
>         the default from cpp_warning is better.
>         (cpp_pop_definition): Pass new location argument to
>         _cpp_create_definition.
>         * pch.cc (cpp_read_state): Likewise.
> 
> gcc/testsuite/ChangeLog:
> 
>         PR c++/66290
>         * c-c++-common/cpp/macro-ranges.c: New test.
>         * c-c++-common/cpp/line-2.c: Adapt to check for column
> information
>         on macro-related libcpp warnings.
>         * c-c++-common/cpp/line-3.c: Likewise.
>         * c-c++-common/cpp/macro-arg-count-1.c: Likewise.
>         * c-c++-common/cpp/pr58844-1.c: Likewise.
>         * c-c++-common/cpp/pr58844-2.c: Likewise.
>         * c-c++-common/cpp/warning-zero-location.c: Likewise.
>         * c-c++-common/pragma-diag-14.c: Likewise.
>         * c-c++-common/pragma-diag-15.c: Likewise.
>         * g++.dg/modules/macro-2_d.C: Likewise.
>         * g++.dg/modules/macro-4_d.C: Likewise.
>         * g++.dg/modules/macro-4_e.C: Likewise.
>         * g++.dg/spellcheck-macro-ordering.C: Likewise.
>         * gcc.dg/builtin-redefine.c: Likewise.
>         * gcc.dg/cpp/Wunused.c: Likewise.
>         * gcc.dg/cpp/redef2.c: Likewise.
>         * gcc.dg/cpp/redef3.c: Likewise.
>         * gcc.dg/cpp/redef4.c: Likewise.
>         * gcc.dg/cpp/ucnid-11-utf8.c: Likewise.
>         * gcc.dg/cpp/ucnid-11.c: Likewise.
>         * gcc.dg/cpp/undef2.c: Likewise.
>         * gcc.dg/cpp/warn-redefined-2.c: Likewise.
>         * gcc.dg/cpp/warn-redefined.c: Likewise.
>         * gcc.dg/cpp/warn-unused-macros-2.c: Likewise.
>         * gcc.dg/cpp/warn-unused-macros.c: Likewise.
> ---
> 
> Notes:
>     Hello-
>     
>     The PR (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66290) was
> originally
>     about the entirely wrong location for -Wunused-macros in C++
> mode, which
>     behavior was fixed by r13-1903, but before closing it out I
> wanted to also
>     address a second point brought up in the PR comments, namely that
> we do not
>     include column information when emitting diagnostics for macro
> names, such as
>     is done for -Wunused-macros. The attached patch updates the
> location stored in
>     the cpp_macro object so that it includes the column and range
> information for
>     the token comprising the macro name; previously, the location was
> just the
>     generic one pointing to the whole line.
>     
>     The change to libcpp is very small, the reason for all the
> testsuite changes is
>     that I have updated all tests explicitly looking for the
> columnless diagnostics
>     (with the "-:" syntax to dg-warning et al) so that they expect a
> column
>     instead. I also added a new test which verifies the expected
> range information
>     in diagnostics with carets.
>     
>     Bootstrap + regtest on x86-64 Linux looks good. Please let me
> know if it looks
>     OK? Thanks!
>     
>     -Lewis
> 
>  libcpp/directives.cc                          |  13 +-
>  libcpp/internal.h                             |   2 +-
>  libcpp/macro.cc                               |  12 +-
>  libcpp/pch.cc                                 |   2 +-
>  gcc/testsuite/c-c++-common/cpp/line-2.c       |   2 +-
>  gcc/testsuite/c-c++-common/cpp/line-3.c       |   2 +-
>  .../c-c++-common/cpp/macro-arg-count-1.c      |   4 +-
>  gcc/testsuite/c-c++-common/cpp/macro-ranges.c |  52 ++
>  gcc/testsuite/c-c++-common/cpp/pr58844-1.c    |   4 +-
>  gcc/testsuite/c-c++-common/cpp/pr58844-2.c    |   4 +-
>  .../c-c++-common/cpp/warning-zero-location.c  |   2 +-
>  gcc/testsuite/c-c++-common/pragma-diag-14.c   |   2 +-
>  gcc/testsuite/c-c++-common/pragma-diag-15.c   |   2 +-
>  gcc/testsuite/g++.dg/modules/macro-2_d.C      |   4 +-
>  gcc/testsuite/g++.dg/modules/macro-4_d.C      |   4 +-
>  gcc/testsuite/g++.dg/modules/macro-4_e.C      |   2 +-
>  .../g++.dg/spellcheck-macro-ordering.C        |   2 +-
>  gcc/testsuite/gcc.dg/builtin-redefine.c       |  18 +-
>  gcc/testsuite/gcc.dg/cpp/Wunused.c            |   6 +-
>  gcc/testsuite/gcc.dg/cpp/redef2.c             |  20 +-
>  gcc/testsuite/gcc.dg/cpp/redef3.c             |  14 +-
>  gcc/testsuite/gcc.dg/cpp/redef4.c             | 520 +++++++++-------
> --
>  gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c      |  12 +-
>  gcc/testsuite/gcc.dg/cpp/ucnid-11.c           |  12 +-
>  gcc/testsuite/gcc.dg/cpp/undef2.c             |   6 +-
>  gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c   |  10 +-
>  gcc/testsuite/gcc.dg/cpp/warn-redefined.c     |  10 +-
>  .../gcc.dg/cpp/warn-unused-macros-2.c         |   2 +-
>  gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c |   2 +-
>  29 files changed, 405 insertions(+), 342 deletions(-)
>  create mode 100644 gcc/testsuite/c-c++-common/cpp/macro-ranges.c
>
diff mbox series

Patch

diff --git a/libcpp/directives.cc b/libcpp/directives.cc
index 4104d5166e2..5ae5d805ae8 100644
--- a/libcpp/directives.cc
+++ b/libcpp/directives.cc
@@ -640,6 +640,10 @@  do_define (cpp_reader *pfile)
 
   if (node)
     {
+      /* This is a better location than pfile->directive_line to store
+	 as the macro location.  */
+      const location_t name_loc = cpp_diagnostic_get_current_location (pfile);
+
       /* If we have been requested to expand comments into macros,
 	 then re-enable saving of comments.  */
       pfile->state.save_comments =
@@ -648,7 +652,7 @@  do_define (cpp_reader *pfile)
       if (pfile->cb.before_define)
 	pfile->cb.before_define (pfile);
 
-      if (_cpp_create_definition (pfile, node))
+      if (_cpp_create_definition (pfile, node, name_loc))
 	if (pfile->cb.define)
 	  pfile->cb.define (pfile, pfile->directive_line, node);
 
@@ -679,9 +683,8 @@  do_undef (cpp_reader *pfile)
 		       "undefining \"%s\"", NODE_NAME (node));
 	  else if (cpp_builtin_macro_p (node)
 		   && CPP_OPTION (pfile, warn_builtin_macro_redefined))
-	    cpp_warning_with_line (pfile, CPP_W_BUILTIN_MACRO_REDEFINED,
-				   pfile->directive_line, 0,
-				   "undefining \"%s\"", NODE_NAME (node));
+	    cpp_warning (pfile, CPP_W_BUILTIN_MACRO_REDEFINED,
+			 "undefining \"%s\"", NODE_NAME (node));
 
 	  if (node->value.macro
 	      && CPP_OPTION (pfile, warn_unused_macros))
@@ -2622,7 +2625,7 @@  cpp_pop_definition (cpp_reader *pfile, struct def_pragma_macro *c)
       {
 	_cpp_clean_line (pfile);
 	nbuf->sysp = 1;
-	if (!_cpp_create_definition (pfile, h))
+	if (!_cpp_create_definition (pfile, h, 0))
 	  abort ();
 	_cpp_pop_buffer (pfile);
       }
diff --git a/libcpp/internal.h b/libcpp/internal.h
index badfd1b40da..7da72d3bd5c 100644
--- a/libcpp/internal.h
+++ b/libcpp/internal.h
@@ -686,7 +686,7 @@  inline bool _cpp_maybe_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node,
 }
 extern cpp_macro *_cpp_new_macro (cpp_reader *, cpp_macro_kind, void *);
 extern void _cpp_free_definition (cpp_hashnode *);
-extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
+extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *, location_t);
 extern void _cpp_pop_context (cpp_reader *);
 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
 				    const unsigned char *, size_t);
diff --git a/libcpp/macro.cc b/libcpp/macro.cc
index 8ebf360c03c..e51ea1e1348 100644
--- a/libcpp/macro.cc
+++ b/libcpp/macro.cc
@@ -3819,7 +3819,8 @@  _cpp_new_macro (cpp_reader *pfile, cpp_macro_kind kind, void *placement)
 
 /* Parse a macro and save its expansion.  Returns nonzero on success.  */
 bool
-_cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node)
+_cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node,
+			location_t name_loc)
 {
   cpp_macro *macro;
 
@@ -3831,6 +3832,13 @@  _cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node)
   if (!macro)
     return false;
 
+  /* _cpp_new_macro () has set macro->line to pfile->directive_line, which
+     denotes the line containing the #define with no column information.  If
+     provided, change to name_loc, which will be the token src_loc for the
+     macro name, including the location and range information.  */
+  if (name_loc)
+    macro->line = name_loc;
+
   if (cpp_macro_p (node))
     {
       if (CPP_OPTION (pfile, warn_unused_macros))
@@ -3844,7 +3852,7 @@  _cpp_create_definition (cpp_reader *pfile, cpp_hashnode *node)
 
 	  bool warned = 
 	    cpp_pedwarning_with_line (pfile, reason,
-				      pfile->directive_line, 0,
+				      macro->line, 0,
 				      "\"%s\" redefined", NODE_NAME (node));
 
 	  if (warned && cpp_user_macro_p (node))
diff --git a/libcpp/pch.cc b/libcpp/pch.cc
index 9aa589a044e..5638ffdd637 100644
--- a/libcpp/pch.cc
+++ b/libcpp/pch.cc
@@ -838,7 +838,7 @@  cpp_read_state (cpp_reader *r, const char *name, FILE *f,
 	      != NULL)
 	    {
 	      _cpp_clean_line (r);
-	      if (!_cpp_create_definition (r, h))
+	      if (!_cpp_create_definition (r, h, 0))
 		abort ();
 	      _cpp_pop_buffer (r);
 	    }
diff --git a/gcc/testsuite/c-c++-common/cpp/line-2.c b/gcc/testsuite/c-c++-common/cpp/line-2.c
index 364ad0e3931..3ce23340871 100644
--- a/gcc/testsuite/c-c++-common/cpp/line-2.c
+++ b/gcc/testsuite/c-c++-common/cpp/line-2.c
@@ -8,4 +8,4 @@  int line4;
 
 // { dg-regexp {In file included from <command-line>:\n[^\n]*/line-2.h:4:2: error: #error wrong\n} }
 
-// { dg-regexp {[^\n]*/line-2.c:3:11: error: macro "bill" passed 1 arguments, but takes just 0\n[^\n]*/line-2.h:3: note: macro "bill" defined here\n} }
+// { dg-regexp {[^\n]*/line-2.c:3:11: error: macro "bill" passed 1 arguments, but takes just 0\n[^\n]*/line-2.h:3:9: note: macro "bill" defined here\n} }
diff --git a/gcc/testsuite/c-c++-common/cpp/line-3.c b/gcc/testsuite/c-c++-common/cpp/line-3.c
index b254ae40041..b0672923756 100644
--- a/gcc/testsuite/c-c++-common/cpp/line-3.c
+++ b/gcc/testsuite/c-c++-common/cpp/line-3.c
@@ -15,6 +15,6 @@  int line4;
 
 // { dg-regexp {In file included from <command-line>:\n[^\n]*/line-2.h:4:2: error: #error wrong\n} }
 
-// { dg-regexp {[^\n]*/line-3.c:3:11: error: macro "bill" passed 1 arguments, but takes just 0\n[^\n]*/line-2.h:3: note: macro "bill" defined here\n} }
+// { dg-regexp {[^\n]*/line-3.c:3:11: error: macro "bill" passed 1 arguments, but takes just 0\n[^\n]*/line-2.h:3:9: note: macro "bill" defined here\n} }
 
 // { dg-options "-fpreprocessed -fdirectives-only" }
diff --git a/gcc/testsuite/c-c++-common/cpp/macro-arg-count-1.c b/gcc/testsuite/c-c++-common/cpp/macro-arg-count-1.c
index 7773c47e765..103e88ecd4d 100644
--- a/gcc/testsuite/c-c++-common/cpp/macro-arg-count-1.c
+++ b/gcc/testsuite/c-c++-common/cpp/macro-arg-count-1.c
@@ -9,7 +9,7 @@  void test_1 ()
    MACRO_1(42);
              ^
      { dg-end-multiline-output "" } */
-  /* { dg-message "-: macro .MACRO_1. defined here" "" { target *-*-* } def_of_MACRO_1 }
+  /* { dg-message "macro .MACRO_1. defined here" "" { target *-*-* } def_of_MACRO_1 }
   /* { dg-begin-multiline-output "" }
  #define MACRO_1(X,Y)
  
@@ -33,7 +33,7 @@  void test_2 ()
    MACRO_2(1, 2, 3);
                   ^
      { dg-end-multiline-output "" } */
-  /* { dg-message "-: macro .MACRO_2. defined here" "" { target *-*-* } def_of_MACRO_2 }
+  /* { dg-message "macro .MACRO_2. defined here" "" { target *-*-* } def_of_MACRO_2 }
   /* { dg-begin-multiline-output "" }
  #define MACRO_2(X,Y)
  
diff --git a/gcc/testsuite/c-c++-common/cpp/macro-ranges.c b/gcc/testsuite/c-c++-common/cpp/macro-ranges.c
new file mode 100644
index 00000000000..72b026f85c0
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/macro-ranges.c
@@ -0,0 +1,52 @@ 
+/* { dg-do preprocess } */
+/* { dg-additional-options "-fdiagnostics-show-caret -Wunused-macros -Wbuiltin-macro-redefined" } */
+
+/* Verify that we output range information for diagnostics involving
+   macro definitions.  */
+
+#undef __TIME__ /* { dg-warning {undefining "__TIME__"} } */
+/* { dg-begin-multiline-output "" }
+ #undef __TIME__
+        ^~~~~~~~
+/* { dg-end-multiline-output "" } */
+
+#define XYZ 123 /* { dg-warning {macro "XYZ" is not used} } */
+/* { dg-begin-multiline-output "" }
+ #define XYZ 123
+         ^~~
+/* { dg-end-multiline-output "" } */
+
+#define MACRO initial_definition /* { dg-line def_line } */
+
+/* This locus is output first for the unused warning... */
+/* { dg-warning {macro "MACRO" is not used} "" { target *-*-* } def_line } */
+/* { dg-begin-multiline-output "" }
+ #define MACRO initial_definition
+         ^~~~~
+/* { dg-end-multiline-output "" } */
+
+/* ...then a second time for the redefinition warning.  */
+/* { dg-note {this is the location of the previous definition} "" { target *-*-* } def_line } */
+/* { dg-begin-multiline-output "" }
+ #define MACRO initial_definition
+         ^~~~~
+/* { dg-end-multiline-output "" } */
+
+#define MACRO /* { dg-warning {"MACRO" redefined} } */
+/* { dg-begin-multiline-output "" }
+ #define MACRO
+         ^~~~~
+{ dg-end-multiline-output "" } */
+
+#define MACRO2(x,y) x /* { dg-note {macro "MACRO2" defined here} } */
+/* { dg-begin-multiline-output "" }
+ #define MACRO2(x,y)
+         ^~~~~~
+{ dg-end-multiline-output "" } */
+
+MACRO2(MACRO, MACRO)
+MACRO2(MACRO) /* { dg-error {macro "MACRO2" requires 2 arguments, but only 1 given} } */
+/* { dg-begin-multiline-output "" }
+ MACRO2(MACRO)
+             ^
+{ dg-end-multiline-output "" } */
diff --git a/gcc/testsuite/c-c++-common/cpp/pr58844-1.c b/gcc/testsuite/c-c++-common/cpp/pr58844-1.c
index 2a2e277b0fc..3abf8a76803 100644
--- a/gcc/testsuite/c-c++-common/cpp/pr58844-1.c
+++ b/gcc/testsuite/c-c++-common/cpp/pr58844-1.c
@@ -4,5 +4,5 @@ 
 
 #define A x######x
 int A = 1;
-#define A x######x	/* { dg-message "-:previous definition" } */
-#define A x##x		/* { dg-warning "-:redefined" } */
+#define A x######x	/* { dg-message "previous definition" } */
+#define A x##x		/* { dg-warning "redefined" } */
diff --git a/gcc/testsuite/c-c++-common/cpp/pr58844-2.c b/gcc/testsuite/c-c++-common/cpp/pr58844-2.c
index 52993b314be..1e219152fc5 100644
--- a/gcc/testsuite/c-c++-common/cpp/pr58844-2.c
+++ b/gcc/testsuite/c-c++-common/cpp/pr58844-2.c
@@ -4,5 +4,5 @@ 
 
 #define A x######x
 int A = 1;
-#define A x######x	/* { dg-message "-:previous definition" } */
-#define A x##x		/* { dg-warning "-:redefined" } */
+#define A x######x	/* { dg-message "previous definition" } */
+#define A x##x		/* { dg-warning "redefined" } */
diff --git a/gcc/testsuite/c-c++-common/cpp/warning-zero-location.c b/gcc/testsuite/c-c++-common/cpp/warning-zero-location.c
index 57544b6aff1..2b9c9a95217 100644
--- a/gcc/testsuite/c-c++-common/cpp/warning-zero-location.c
+++ b/gcc/testsuite/c-c++-common/cpp/warning-zero-location.c
@@ -3,6 +3,6 @@ 
    { dg-do compile }
  */
 
-#define _GNU_SOURCE 	/* { dg-warning "-:redefined" } */
+#define _GNU_SOURCE 	/* { dg-warning "redefined" } */
 
 /* { dg-message "" "#define _GNU_SOURCE" {target *-*-* } 0 } */
diff --git a/gcc/testsuite/c-c++-common/pragma-diag-14.c b/gcc/testsuite/c-c++-common/pragma-diag-14.c
index 618e7e1ef27..45dc4a38c5c 100644
--- a/gcc/testsuite/c-c++-common/pragma-diag-14.c
+++ b/gcc/testsuite/c-c++-common/pragma-diag-14.c
@@ -5,5 +5,5 @@ 
    location was not tracked properly with -E or -save-temps; check that it works
    now.  */
 
-#define X /* { dg-warning "-:-Wunused-macros" } */
+#define X /* { dg-warning "-Wunused-macros" } */
 #pragma GCC diagnostic ignored "-Wunused-macros"
diff --git a/gcc/testsuite/c-c++-common/pragma-diag-15.c b/gcc/testsuite/c-c++-common/pragma-diag-15.c
index 8ffff88d5e3..5cb8c356ed6 100644
--- a/gcc/testsuite/c-c++-common/pragma-diag-15.c
+++ b/gcc/testsuite/c-c++-common/pragma-diag-15.c
@@ -9,5 +9,5 @@ 
    because the location of the macro definition is incorrectly set.  This is a
    separate issue, will resolve it in a later patch.  */
 
-#define X /* { dg-warning "-:-Wunused-macros" } */
+#define X /* { dg-warning "-Wunused-macros" } */
 #pragma GCC diagnostic ignored "-Wunused-macros"
diff --git a/gcc/testsuite/g++.dg/modules/macro-2_d.C b/gcc/testsuite/g++.dg/modules/macro-2_d.C
index 04b80fb3058..e78fc7cbb0d 100644
--- a/gcc/testsuite/g++.dg/modules/macro-2_d.C
+++ b/gcc/testsuite/g++.dg/modules/macro-2_d.C
@@ -8,7 +8,7 @@  import "macro-2_b.H";
 int FOO_OK = BAR_OK(1);
 
 int BAR_BAD;
-// { dg-regexp {[^\n]*macro-2_d.C:10:5: error: inconsistent imported macro definition 'BAR_BAD'\nIn module [^\n]*macro-2_a.H, imported at [^\n]*macro-2_d.C:5:\n[^\n]*macro-2_a.H:11: note: '#define BAR_BAD\(BAZ\) BINKY\(2\)'\nIn module [^\n]*macro-2_b.H, imported at [^\n]*macro-2_d.C:6:\n[^\n]*macro-2_b.H:21: note: '#define BAR_BAD\(BAZ\) BINKY\(3\)'\n} }
+// { dg-regexp {[^\n]*macro-2_d.C:10:5: error: inconsistent imported macro definition 'BAR_BAD'\nIn module [^\n]*macro-2_a.H, imported at [^\n]*macro-2_d.C:5:\n[^\n]*macro-2_a.H:11:9: note: '#define BAR_BAD\(BAZ\) BINKY\(2\)'\nIn module [^\n]*macro-2_b.H, imported at [^\n]*macro-2_d.C:6:\n[^\n]*macro-2_b.H:21:9: note: '#define BAR_BAD\(BAZ\) BINKY\(3\)'\n} }
 
 int FOO_BAD;
-// { dg-regexp {[^\n]*macro-2_d.C:13:5: error: inconsistent imported macro definition 'FOO_BAD'\nIn module [^\n]*macro-2_a.H, imported at [^\n]*macro-2_d.C:5:\n[^\n]*macro-2_a.H:10: note: '#define FOO_BAD foo'\nIn module [^\n]*macro-2_b.H, imported at [^\n]*macro-2_d.C:6:\n[^\n]*macro-2_b.H:20: note: '#define FOO_BAD foot'\n} }
+// { dg-regexp {[^\n]*macro-2_d.C:13:5: error: inconsistent imported macro definition 'FOO_BAD'\nIn module [^\n]*macro-2_a.H, imported at [^\n]*macro-2_d.C:5:\n[^\n]*macro-2_a.H:10:9: note: '#define FOO_BAD foo'\nIn module [^\n]*macro-2_b.H, imported at [^\n]*macro-2_d.C:6:\n[^\n]*macro-2_b.H:20:9: note: '#define FOO_BAD foot'\n} }
diff --git a/gcc/testsuite/g++.dg/modules/macro-4_d.C b/gcc/testsuite/g++.dg/modules/macro-4_d.C
index bff9494281b..d9c08ce16be 100644
--- a/gcc/testsuite/g++.dg/modules/macro-4_d.C
+++ b/gcc/testsuite/g++.dg/modules/macro-4_d.C
@@ -3,6 +3,6 @@ 
 import "macro-4_b.H";
 import "macro-4_a.H";
 
-// { dg-regexp {[^\n]*macro-4_d.C: warning: inconsistent imported macro definition 'TWO' \[-Winvalid-imported-macros\]\nIn module [^\n]*macro-4_b.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_b.H:[0-9]*: note: .#define TWO 2a.\nIn module [^\n]*macro-4_a.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_a.H:[0-9]*: note: .#define TWO 2.\n} }
+// { dg-regexp {[^\n]*macro-4_d.C: warning: inconsistent imported macro definition 'TWO' \[-Winvalid-imported-macros\]\nIn module [^\n]*macro-4_b.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_b.H:[0-9]*:[0-9]*: note: .#define TWO 2a.\nIn module [^\n]*macro-4_a.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_a.H:[0-9]*:[0-9]*: note: .#define TWO 2.\n} }
 
-// { dg-regexp {[^\n]*macro-4_d.C: warning: inconsistent imported macro definition 'THREE' \[-Winvalid-imported-macros\]\nIn module [^\n]*macro-4_b.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_b.H:[0-9]*: note: .#define THREE 3b.\nIn module [^\n]*macro-4_a.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_a.H:[0-9]*: note: .#define THREE 3.\n} }
+// { dg-regexp {[^\n]*macro-4_d.C: warning: inconsistent imported macro definition 'THREE' \[-Winvalid-imported-macros\]\nIn module [^\n]*macro-4_b.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_b.H:[0-9]*:[0-9]*: note: .#define THREE 3b.\nIn module [^\n]*macro-4_a.H, imported at [^\n]*macro-4_d.C:[0-9]*:\n[^\n]*macro-4_a.H:[0-9]*:[0-9]*: note: .#define THREE 3.\n} }
diff --git a/gcc/testsuite/g++.dg/modules/macro-4_e.C b/gcc/testsuite/g++.dg/modules/macro-4_e.C
index 38fa6c7feeb..392387f3a1c 100644
--- a/gcc/testsuite/g++.dg/modules/macro-4_e.C
+++ b/gcc/testsuite/g++.dg/modules/macro-4_e.C
@@ -10,4 +10,4 @@  int stop;
 #error bah!
 #endif
 
-// { dg-regexp {[^\n]*macro-4_e.C: warning: inconsistent imported macro definition 'TWO' \[-Winvalid-imported-macros\]\nIn module [^\n]*macro-4_b.H, imported at [^\n]*macro-4_e.C:[0-9]*:\n[^\n]*macro-4_b.H:[0-9]*: note: .#define TWO 2a.\nIn module [^\n]*macro-4_a.H, imported at [^\n]*macro-4_e.C:[0-9]*:\n[^\n]*macro-4_a.H:[0-9]*: note: .#define TWO 2.\n} }
+// { dg-regexp {[^\n]*macro-4_e.C: warning: inconsistent imported macro definition 'TWO' \[-Winvalid-imported-macros\]\nIn module [^\n]*macro-4_b.H, imported at [^\n]*macro-4_e.C:[0-9]*:\n[^\n]*macro-4_b.H:[0-9]*:[0-9]*: note: .#define TWO 2a.\nIn module [^\n]*macro-4_a.H, imported at [^\n]*macro-4_e.C:[0-9]*:\n[^\n]*macro-4_a.H:[0-9]*:[0-9]*: note: .#define TWO 2.\n} }
diff --git a/gcc/testsuite/g++.dg/spellcheck-macro-ordering.C b/gcc/testsuite/g++.dg/spellcheck-macro-ordering.C
index bbd41f48e09..59e9f8a9438 100644
--- a/gcc/testsuite/g++.dg/spellcheck-macro-ordering.C
+++ b/gcc/testsuite/g++.dg/spellcheck-macro-ordering.C
@@ -13,4 +13,4 @@  class DocTargetDriver {
 };
 
 #define OVERRIDE override
-// { dg-message "-:it was later defined here" "" { target *-*-* } .-1 }
+// { dg-message "9:it was later defined here" "" { target *-*-* } .-1 }
diff --git a/gcc/testsuite/gcc.dg/builtin-redefine.c b/gcc/testsuite/gcc.dg/builtin-redefine.c
index 882b2210992..8090015f693 100644
--- a/gcc/testsuite/gcc.dg/builtin-redefine.c
+++ b/gcc/testsuite/gcc.dg/builtin-redefine.c
@@ -27,8 +27,8 @@ 
 #define __TIME__ "X"         /* Define while undefined.  */
 #define __TIME__ "X"         /* Re-define while defined.  */ /* { dg-line time_prev } */
 
-#define __TIME__ "Y"         /* { dg-warning "-:\"__TIME__\" redefined" } */
-/* { dg-message "-:previous definition" "" { target *-*-* } time_prev } */
+#define __TIME__ "Y"         /* { dg-warning "\"__TIME__\" redefined" } */
+/* { dg-message "previous definition" "" { target *-*-* } time_prev } */
 
 #undef __TIME__              /* Undefine while defined.  */
 
@@ -38,8 +38,8 @@ 
 #define __DATE__ "X"         /* Define while undefined.  */
 #define __DATE__ "X"         /* Re-define while defined.  */ /* { dg-line date_prev } */
 
-#define __DATE__ "Y"         /* { dg-warning "-:\"__DATE__\" redefined" } */
-/* { dg-message "-:previous definition" "" { target *-*-* } date_prev } */
+#define __DATE__ "Y"         /* { dg-warning "\"__DATE__\" redefined" } */
+/* { dg-message "previous definition" "" { target *-*-* } date_prev } */
 
 #undef __DATE__              /* Undefine while defined.  */
 
@@ -47,8 +47,8 @@ 
 #define __TIMESTAMP__ "X"    /* Define while already defined.  */
 #define __TIMESTAMP__ "X"    /* Re-define while defined.  */ /* { dg-line timestamp_prev } */
 
-#define __TIMESTAMP__ "Y"    /* { dg-warning "-:\"__TIMESTAMP__\" redefined" } */
-/* { dg-message "-:previous definition" "" { target *-*-* } timestamp_prev } */
+#define __TIMESTAMP__ "Y"    /* { dg-warning "\"__TIMESTAMP__\" redefined" } */
+/* { dg-message "previous definition" "" { target *-*-* } timestamp_prev } */
 
 #undef __TIMESTAMP__         /* Undefine while defined.  */
 
@@ -71,9 +71,9 @@ 
 /* { dg-bogus "Expected built-in is not defined" "" { target *-*-* } .-1 } */
 #endif
 
-#define __LINE__ 0           /* { dg-warning "-:\"__LINE__\" redef" } */
-#define __INCLUDE_LEVEL__ 0  /* { dg-warning "-:\"__INCLUDE_LEVEL__\" redef" } */
-#define __COUNTER__ 0        /* { dg-warning "-:\"__COUNTER__\" redef" } */
+#define __LINE__ 0           /* { dg-warning "\"__LINE__\" redef" } */
+#define __INCLUDE_LEVEL__ 0  /* { dg-warning "\"__INCLUDE_LEVEL__\" redef" } */
+#define __COUNTER__ 0        /* { dg-warning "\"__COUNTER__\" redef" } */
 
 
 int unused;  /* Silence `ISO C forbids an empty translation unit' warning.  */
diff --git a/gcc/testsuite/gcc.dg/cpp/Wunused.c b/gcc/testsuite/gcc.dg/cpp/Wunused.c
index d6f76288cd7..ac363ad04b8 100644
--- a/gcc/testsuite/gcc.dg/cpp/Wunused.c
+++ b/gcc/testsuite/gcc.dg/cpp/Wunused.c
@@ -15,9 +15,9 @@ 
 #define used3			/* { dg-bogus "used" } */
 #define used4 used4		/* { dg-bogus "used" } */
 
-#define unused5			/* { dg-warning "-:used" } */
-#define unused6			/* { dg-warning "-:used" } */
-#define unused7()		/* { dg-warning "-:used" } */
+#define unused5			/* { dg-warning "used" } */
+#define unused6			/* { dg-warning "used" } */
+#define unused7()		/* { dg-warning "used" } */
 
 #if defined used1
 #endif
diff --git a/gcc/testsuite/gcc.dg/cpp/redef2.c b/gcc/testsuite/gcc.dg/cpp/redef2.c
index 439d33a7057..1dbc10033ed 100644
--- a/gcc/testsuite/gcc.dg/cpp/redef2.c
+++ b/gcc/testsuite/gcc.dg/cpp/redef2.c
@@ -17,15 +17,15 @@ 
 #define foo(x) x
 #define foo(x)x		/* { dg-bogus "redefined" "redefined foo" } */
 
-/* { dg-warning "-:redefined" "redef mac"     { target *-*-* } 7  }
-   { dg-warning "-:redefined" "redef mac"     { target *-*-* } 8  }
-   { dg-warning "-:redefined" "redef mac"     { target *-*-* } 9  }
-   { dg-warning "-:redefined" "redef ro"      { target *-*-* } 12 }
-   { dg-warning "-:redefined" "redef va"      { target *-*-* } 15 }
+/* { dg-warning "redefined" "redef mac"     { target *-*-* } 7  }
+   { dg-warning "redefined" "redef mac"     { target *-*-* } 8  }
+   { dg-warning "redefined" "redef mac"     { target *-*-* } 9  }
+   { dg-warning "redefined" "redef ro"      { target *-*-* } 12 }
+   { dg-warning "redefined" "redef va"      { target *-*-* } 15 }
 
-   { dg-message "-:previous"  "prev def mac"  { target *-*-* } 6  }
-   { dg-message "-:previous"  "prev def mac"  { target *-*-* } 7  }
-   { dg-message "-:previous"  "prev def mac"  { target *-*-* } 8  }
-   { dg-message "-:previous"  "prev def ro"   { target *-*-* } 11 }
-   { dg-message "-:previous"  "prev def va"   { target *-*-* } 14 }
+   { dg-message "previous"  "prev def mac"  { target *-*-* } 6  }
+   { dg-message "previous"  "prev def mac"  { target *-*-* } 7  }
+   { dg-message "previous"  "prev def mac"  { target *-*-* } 8  }
+   { dg-message "previous"  "prev def ro"   { target *-*-* } 11 }
+   { dg-message "previous"  "prev def va"   { target *-*-* } 14 }
 */
diff --git a/gcc/testsuite/gcc.dg/cpp/redef3.c b/gcc/testsuite/gcc.dg/cpp/redef3.c
index 4e4ef128b10..1c541a45bb1 100644
--- a/gcc/testsuite/gcc.dg/cpp/redef3.c
+++ b/gcc/testsuite/gcc.dg/cpp/redef3.c
@@ -11,11 +11,11 @@ 
 #define D 1 2
 #define E
 
-/* { dg-warning "-:redefined" "redef A"      { target *-*-* } 7  }
-   { dg-warning "-:redefined" "redef B"      { target *-*-* } 9  }
-   { dg-warning "-:redefined" "redef D"      { target *-*-* } 11 }
-   { dg-warning "-:redefined" "redef E"      { target *-*-* } 12 }
-   { dg-message "-:previous"  "prev def A"   { target *-*-* } 6  }
-   { dg-message "-:previous"  "prev def B"   { target *-*-* } 8  }
-   { dg-message "-:previous"  "prev def D/E" { target *-*-* } 0  }
+/* { dg-warning "redefined" "redef A"      { target *-*-* } 7  }
+   { dg-warning "redefined" "redef B"      { target *-*-* } 9  }
+   { dg-warning "redefined" "redef D"      { target *-*-* } 11 }
+   { dg-warning "redefined" "redef E"      { target *-*-* } 12 }
+   { dg-message "previous"  "prev def A"   { target *-*-* } 6  }
+   { dg-message "previous"  "prev def B"   { target *-*-* } 8  }
+   { dg-message "previous"  "prev def D/E" { target *-*-* } 0  }
 */
diff --git a/gcc/testsuite/gcc.dg/cpp/redef4.c b/gcc/testsuite/gcc.dg/cpp/redef4.c
index aa6729b770b..b34635b2e42 100644
--- a/gcc/testsuite/gcc.dg/cpp/redef4.c
+++ b/gcc/testsuite/gcc.dg/cpp/redef4.c
@@ -4,41 +4,41 @@ 
 /* { dg-do preprocess } */
 /* { dg-options "" } */
 
-#define str(x) #x /* { dg-message "-:previous definition" } */
-#define str(x) %: x /* { dg-warning "-:redefined" } */
+#define str(x) #x /* { dg-message "previous definition" } */
+#define str(x) %: x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) #x /* { dg-message "-:previous definition" } */
-#define str(x) # x /* { dg-warning "-:redefined" } */
+#define str(x) #x /* { dg-message "previous definition" } */
+#define str(x) # x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) #x /* { dg-message "-:previous definition" } */
-#define str(x) %: x /* { dg-warning "-:redefined" } */
+#define str(x) #x /* { dg-message "previous definition" } */
+#define str(x) %: x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) %:x /* { dg-message "-:previous definition" } */
-#define str(x) #x /* { dg-warning "-:redefined" } */
+#define str(x) %:x /* { dg-message "previous definition" } */
+#define str(x) #x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) %:x /* { dg-message "-:previous definition" } */
-#define str(x) %: x /* { dg-warning "-:redefined" } */
+#define str(x) %:x /* { dg-message "previous definition" } */
+#define str(x) %: x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) %:x /* { dg-message "-:previous definition" } */
-#define str(x) # x /* { dg-warning "-:redefined" } */
+#define str(x) %:x /* { dg-message "previous definition" } */
+#define str(x) # x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) %:x /* { dg-message "-:previous definition" } */
-#define str(x) %: x /* { dg-warning "-:redefined" } */
+#define str(x) %:x /* { dg-message "previous definition" } */
+#define str(x) %: x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) # x /* { dg-message "-:previous definition" } */
-#define str(x) #x /* { dg-warning "-:redefined" } */
+#define str(x) # x /* { dg-message "previous definition" } */
+#define str(x) #x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) # x /* { dg-message "-:previous definition" } */
-#define str(x) %: x /* { dg-warning "-:redefined" } */
+#define str(x) # x /* { dg-message "previous definition" } */
+#define str(x) %: x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) # x /* { dg-message "-:previous definition" } */
-#define str(x) %: x /* { dg-warning "-:redefined" } */
+#define str(x) # x /* { dg-message "previous definition" } */
+#define str(x) %: x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) %: x /* { dg-message "-:previous definition" } */
-#define str(x) #x /* { dg-warning "-:redefined" } */
+#define str(x) %: x /* { dg-message "previous definition" } */
+#define str(x) #x /* { dg-warning "redefined" } */
 #undef str
-#define str(x) %: x /* { dg-message "-:previous definition" } */
-#define str(x) # x /* { dg-warning "-:redefined" } */
+#define str(x) %: x /* { dg-message "previous definition" } */
+#define str(x) # x /* { dg-warning "redefined" } */
 #undef str
 
 #define str(x) #x
@@ -54,173 +54,173 @@ 
 #define str(x) %: x
 #undef str
 
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a#x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a#x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%:x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a%:x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a# x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a# x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%: x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a%: x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%: x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a%: x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%: x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a%: x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%: x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a%: x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%: x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a%: x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a%: x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a%: x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a #x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a #x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %:x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a %:x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a # x /* { dg-message "-:previous definition" } */
-#define astr(x) a %: x /* { dg-warning "-:redefined" } */
+#define astr(x) a # x /* { dg-message "previous definition" } */
+#define astr(x) a %: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a#x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a#x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a# x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a# x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a%: x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a%: x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a #x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a #x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a %:x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a %:x /* { dg-warning "redefined" } */
 #undef astr
-#define astr(x) a %: x /* { dg-message "-:previous definition" } */
-#define astr(x) a # x /* { dg-warning "-:redefined" } */
+#define astr(x) a %: x /* { dg-message "previous definition" } */
+#define astr(x) a # x /* { dg-warning "redefined" } */
 #undef astr
 
 #define astr(x) a#x
@@ -248,173 +248,173 @@ 
 #define astr(x) a %: x
 #undef astr
 
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x##y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x## y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x%:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x%:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ##y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ##y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%:y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%:y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x ## y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x ## y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x## y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x%:%: y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x%:%: y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ##y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x ##y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x %:%:y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x %:%:y /* { dg-warning "redefined" } */
 #undef cat
-#define cat(x,y) x %:%: y /* { dg-message "-:previous definition" } */
-#define cat(x,y) x ## y /* { dg-warning "-:redefined" } */
+#define cat(x,y) x %:%: y /* { dg-message "previous definition" } */
+#define cat(x,y) x ## y /* { dg-warning "redefined" } */
 #undef cat
 
 #define cat(x,y) x##y
@@ -442,28 +442,28 @@ 
 #define cat(x,y) x %:%: y
 #undef cat
 
-#define cat3(x,y,z) x##y##z /* { dg-message "-:previous definition" } */
-#define cat3(x,y,z) x##y####z /* { dg-warning "-:redefined" } */
+#define cat3(x,y,z) x##y##z /* { dg-message "previous definition" } */
+#define cat3(x,y,z) x##y####z /* { dg-warning "redefined" } */
 #undef cat3
 
-#define cat3(x,y,z) x##y####z /* { dg-message "-:previous definition" } */
-#define cat3(x,y,z) x####y##z /* { dg-warning "-:redefined" } */
+#define cat3(x,y,z) x##y####z /* { dg-message "previous definition" } */
+#define cat3(x,y,z) x####y##z /* { dg-warning "redefined" } */
 #undef cat3
 
-#define cat3(x,y,z) x##y####z /* { dg-message "-:previous definition" } */
-#define cat3(x,y,z) x##y## ##z /* { dg-warning "-:redefined" } */
+#define cat3(x,y,z) x##y####z /* { dg-message "previous definition" } */
+#define cat3(x,y,z) x##y## ##z /* { dg-warning "redefined" } */
 #undef cat3
 
-#define cat3(x,y,z) x##y####z /* { dg-message "-:previous definition" } */
-#define cat3(x,y,z) x##y##%:%:z /* { dg-warning "-:redefined" } */
+#define cat3(x,y,z) x##y####z /* { dg-message "previous definition" } */
+#define cat3(x,y,z) x##y##%:%:z /* { dg-warning "redefined" } */
 #undef cat3
 
-#define cat3(x,y,z) x##y######## ####z /* { dg-message "-:previous definition" } */
-#define cat3(x,y,z) x##y############z /* { dg-warning "-:redefined" } */
+#define cat3(x,y,z) x##y######## ####z /* { dg-message "previous definition" } */
+#define cat3(x,y,z) x##y############z /* { dg-warning "redefined" } */
 #undef cat3
 
-#define cat3(x,y,z) x##y############z /* { dg-message "-:previous definition" } */
-#define cat3(x,y,z) x##y########%:%:##z /* { dg-warning "-:redefined" } */
+#define cat3(x,y,z) x##y############z /* { dg-message "previous definition" } */
+#define cat3(x,y,z) x##y########%:%:##z /* { dg-warning "redefined" } */
 #undef cat3
 
 #define cat3(x,y,z) x##y##z
diff --git a/gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c b/gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c
index 56b88f8be61..701765d1eca 100644
--- a/gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c
+++ b/gcc/testsuite/gcc.dg/cpp/ucnid-11-utf8.c
@@ -4,23 +4,23 @@ 
 /* { dg-options "-std=c99 -pedantic-errors" } */
 
 /* Different spelling of UCN in expansion.  */
-#define m1 \u00c1 /* { dg-message "-:previous definition" } */
-#define m1 Á /* { dg-error "-:redefined" } */
+#define m1 \u00c1 /* { dg-message "previous definition" } */
+#define m1 Á /* { dg-error "redefined" } */
 
 #define m1ok Á
 #define m1ok Á
 
 /* Different spelling of UCN in argument name.  */
-#define m2(\u00c1) /* { dg-message "-:previous definition" } */
-#define m2(Á) /* { dg-error "-:redefined" } */
+#define m2(\u00c1) /* { dg-message "previous definition" } */
+#define m2(Á) /* { dg-error "redefined" } */
 
 #define m2ok(Á)
 #define m2ok(Á)
 
 /* Same spelling in argument name but different spelling when used in
    expansion.  */
-#define m3(\u00c1) \u00c1 /* { dg-message "-:previous definition" } */
-#define m3(\u00c1) Á /* { dg-error "-:redefined" } */
+#define m3(\u00c1) \u00c1 /* { dg-message "previous definition" } */
+#define m3(\u00c1) Á /* { dg-error "redefined" } */
 
 #define m3ok(\u00c1) Á
 #define m3ok(\u00c1) Á
diff --git a/gcc/testsuite/gcc.dg/cpp/ucnid-11.c b/gcc/testsuite/gcc.dg/cpp/ucnid-11.c
index b6956f54454..a44a3eaf421 100644
--- a/gcc/testsuite/gcc.dg/cpp/ucnid-11.c
+++ b/gcc/testsuite/gcc.dg/cpp/ucnid-11.c
@@ -4,23 +4,23 @@ 
 /* { dg-options "-std=c99 -pedantic-errors" } */
 
 /* Different spelling of UCN in expansion.  */
-#define m1 \u00c1 /* { dg-message "-:previous definition" } */
-#define m1 \u00C1 /* { dg-error "-:redefined" } */
+#define m1 \u00c1 /* { dg-message "previous definition" } */
+#define m1 \u00C1 /* { dg-error "redefined" } */
 
 #define m1ok \u00c1
 #define m1ok \u00c1
 
 /* Different spelling of UCN in argument name.  */
-#define m2(\u00c1) /* { dg-message "-:previous definition" } */
-#define m2(\u00C1) /* { dg-error "-:redefined" } */
+#define m2(\u00c1) /* { dg-message "previous definition" } */
+#define m2(\u00C1) /* { dg-error "redefined" } */
 
 #define m2ok(\u00c1)
 #define m2ok(\u00c1)
 
 /* Same spelling in argument name but different spelling when used in
    expansion.  */
-#define m3(\u00c1) \u00c1 /* { dg-message "-:previous definition" } */
-#define m3(\u00c1) \u00C1 /* { dg-error "-:redefined" } */
+#define m3(\u00c1) \u00c1 /* { dg-message "previous definition" } */
+#define m3(\u00c1) \u00C1 /* { dg-error "redefined" } */
 
 #define m3ok(\u00c1) \u00C1
 #define m3ok(\u00c1) \u00C1
diff --git a/gcc/testsuite/gcc.dg/cpp/undef2.c b/gcc/testsuite/gcc.dg/cpp/undef2.c
index 189a72dd9c2..f9b047b8a25 100644
--- a/gcc/testsuite/gcc.dg/cpp/undef2.c
+++ b/gcc/testsuite/gcc.dg/cpp/undef2.c
@@ -3,9 +3,9 @@ 
 
 /* { dg-do preprocess } */
 
-#undef __DATE__		/* { dg-warning "-:undefining \"__DATE__\"" } */
-#undef __TIME__		/* { dg-warning "-:undefining \"__TIME__\"" } */
-#undef __FILE__		/* { dg-warning "-:undefining \"__FILE__\"" } */
+#undef __DATE__		/* { dg-warning "undefining \"__DATE__\"" } */
+#undef __TIME__		/* { dg-warning "undefining \"__TIME__\"" } */
+#undef __FILE__		/* { dg-warning "undefining \"__FILE__\"" } */
 #undef __LINE__		/* { dg-warning "undefining \"__LINE__\"" } */
 #undef __STDC__		/* { dg-warning "undefining \"__STDC__\"" } */
 
diff --git a/gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c b/gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c
index ea5ad8170cd..3e2e57a79bb 100644
--- a/gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c
+++ b/gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c
@@ -6,13 +6,13 @@ 
 // { dg-bogus "__TIME__ builtin is not defined" "no-time" { target *-*-* } .-1 }
 #endif
 
-#define __TIME__ "X"  // { dg-error "-:\"__TIME__\" redefined .-Werror=builtin-macro-redefined." }
+#define __TIME__ "X"  // { dg-error "\"__TIME__\" redefined .-Werror=builtin-macro-redefined." }
 
 #define __TIME__ "Y"  // { dg-bogus "-Wbuiltin-macro-redefined" }
-                      // { dg-warning "-:\"__TIME__\" redefined" "not-builtin-1" { target *-*-* } .-1 }
-                      // { dg-message "-:previous definition" "previous-1" { target *-*-* } 9 }
+                      // { dg-warning "\"__TIME__\" redefined" "not-builtin-1" { target *-*-* } .-1 }
+                      // { dg-message "previous definition" "previous-1" { target *-*-* } 9 }
 
 #define X "X"
 #define X "Y"         // { dg-bogus "-Wbuiltin-macro-redefined" }
-                      // { dg-warning "-:\"X\" redefined" "not-builtin-2" { target *-*-* } .-1 }
-                      // { dg-message "-:previous definition" "previous-2" { target *-*-* } 15 }
+                      // { dg-warning "\"X\" redefined" "not-builtin-2" { target *-*-* } .-1 }
+                      // { dg-message "previous definition" "previous-2" { target *-*-* } 15 }
diff --git a/gcc/testsuite/gcc.dg/cpp/warn-redefined.c b/gcc/testsuite/gcc.dg/cpp/warn-redefined.c
index e0446689706..c562d072e40 100644
--- a/gcc/testsuite/gcc.dg/cpp/warn-redefined.c
+++ b/gcc/testsuite/gcc.dg/cpp/warn-redefined.c
@@ -6,13 +6,13 @@ 
 // { dg-bogus "__TIME__ builtin is not defined" "no-time" { target *-*-* } .-1 }
 #endif
 
-#define __TIME__ "X"  // { dg-warning "-:\"__TIME__\" redefined .-Wbuiltin-macro-redefined." }
+#define __TIME__ "X"  // { dg-warning "\"__TIME__\" redefined .-Wbuiltin-macro-redefined." }
 
 #define __TIME__ "Y"  // { dg-bogus "-Wbuiltin-macro-redefined" }
-                      // { dg-warning "-:\"__TIME__\" redefined" "not-builtin-1" { target *-*-* } .-1 }
-                      // { dg-message "-:previous definition" "previous-1" { target *-*-* } 9 }
+                      // { dg-warning "\"__TIME__\" redefined" "not-builtin-1" { target *-*-* } .-1 }
+                      // { dg-message "previous definition" "previous-1" { target *-*-* } 9 }
 
 #define X "X"
 #define X "Y"         // { dg-bogus "-Wbuiltin-macro-redefined" }
-                      // { dg-warning "-:\"X\" redefined" "not-builtin-2" { target *-*-* } .-1 }
-                      // { dg-message "-:previous definition" "previous-2" { target *-*-* } 15 }
+                      // { dg-warning "\"X\" redefined" "not-builtin-2" { target *-*-* } .-1 }
+                      // { dg-message "previous definition" "previous-2" { target *-*-* } 15 }
diff --git a/gcc/testsuite/gcc.dg/cpp/warn-unused-macros-2.c b/gcc/testsuite/gcc.dg/cpp/warn-unused-macros-2.c
index f82d67fe9c2..7c3efe05351 100644
--- a/gcc/testsuite/gcc.dg/cpp/warn-unused-macros-2.c
+++ b/gcc/testsuite/gcc.dg/cpp/warn-unused-macros-2.c
@@ -1,4 +1,4 @@ 
 // { dg-do preprocess }
 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror=unused-macros" }
 /* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */
-#define X X  // { dg-error "-:macro \"X\" is not used .-Werror=unused-macros." }
+#define X X  // { dg-error "9:macro \"X\" is not used .-Werror=unused-macros." }
diff --git a/gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c b/gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c
index b18f506b13b..74df23971a9 100644
--- a/gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c
+++ b/gcc/testsuite/gcc.dg/cpp/warn-unused-macros.c
@@ -1,4 +1,4 @@ 
 // { dg-do preprocess }
 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Wunused-macros" }
 
-#define X X  // { dg-warning "-:macro \"X\" is not used .-Wunused-macros." }
+#define X X  // { dg-warning "9:macro \"X\" is not used .-Wunused-macros." }