diff mbox series

[v3] Bug 28191 - Interpret DWARF 5 addrx locations

Message ID 20211119150138.2930800-1-gprocida@google.com
State New
Headers show
Series [v3] Bug 28191 - Interpret DWARF 5 addrx locations | expand

Commit Message

Giuliano Procida Nov. 19, 2021, 3:01 p.m. UTC
This change uses libdw facilities to interpret location expressions
instead of using libabigail's own mini-interpreter. With the fix for
elfutils https://sourceware.org/bugzilla/show_bug.cgi?id=28220 in
elfutils-0.186, abidw will correctly interpret Clang DWARF 5 symbol
addresses. Without that fix many declarations will not be linked to
their corresponding symbols due to the incorrect interpretation of
location attribute data.

	* src/abg-dwarf-reader.cc (die_location_address): Use
	dwarf_attr_integrate, dwarf_getlocation and
	dwarf_getlocation_attr to decode addreses, instead of
	die_location_expr and eval_last_constant_dwarf_sub_expr.
	* tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi:
	Refresh test reference output; two more symbols have types.

Signed-off-by: Giuliano Procida <gprocida@google.com>
---
 src/abg-dwarf-reader.cc                       | 23 +++--
 .../PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi | 86 +++++++++++--------
 2 files changed, 68 insertions(+), 41 deletions(-)

Comments

Dodji Seketeli Nov. 23, 2021, 5:15 p.m. UTC | #1
[I am adding Mark to the list recipients as I am going to ask him a
question below]

Hello,

Giuliano Procida <gprocida@google.com> a écrit:

> This change uses libdw facilities to interpret location expressions
> instead of using libabigail's own mini-interpreter. With the fix for
> elfutils https://sourceware.org/bugzilla/show_bug.cgi?id=28220 in
> elfutils-0.186, abidw will correctly interpret Clang DWARF 5 symbol
> addresses. Without that fix many declarations will not be linked to
> their corresponding symbols due to the incorrect interpretation of
> location attribute data.
>
> 	* src/abg-dwarf-reader.cc (die_location_address): Use
> 	dwarf_attr_integrate, dwarf_getlocation and
> 	dwarf_getlocation_attr to decode addreses, instead of
> 	die_location_expr and eval_last_constant_dwarf_sub_expr.
> 	* tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi:
> 	Refresh test reference output; two more symbols have types.

Thanks for looking into that.

It seems to me that we can also do away with the use of eval_last_constant_dwarf_sub_expr from
die_member_offset.  Would that work on your testing binaries?

From what I am seeing, dwarf_getlocation_attr and dwarf_getlocation are
present in elfutils 0.176 which is the oldest version that we need to
support, so we should be able to ditch eval_last_constant_dwarf_sub_expr
and its dependencies altogether.

Or what am I missing?

[...]

Cheers,
Mark Wielaard Nov. 23, 2021, 7:59 p.m. UTC | #2
Hi,

On Tue, Nov 23, 2021 at 06:15:27PM +0100, Dodji Seketeli wrote:
> It seems to me that we can also do away with the use of eval_last_constant_dwarf_sub_expr from
> die_member_offset.  Would that work on your testing binaries?
> 
> From what I am seeing, dwarf_getlocation_attr and dwarf_getlocation are
> present in elfutils 0.176 which is the oldest version that we need to
> support, so we should be able to ditch eval_last_constant_dwarf_sub_expr
> and its dependencies altogether.

I don't know the libabigail code too well, but
eval_last_constant_dwarf_sub_expr seem to be a partial Dwarf
Expression evaluator. elfutils libdw doesn't export one (it really
should though). So I think you still need that code when you get a
non-trivial location expression.

Cheers,

Mark
Giuliano Procida Nov. 24, 2021, 11:11 a.m. UTC | #3
Hi Dodji.

On Tue, 23 Nov 2021 at 17:15, Dodji Seketeli <dodji@seketeli.org> wrote:
>
> [I am adding Mark to the list recipients as I am going to ask him a
> question below]
>

Indeed, I forgot to CC him on the patch. Hi Mark.

>
> Hello,
>
> Giuliano Procida <gprocida@google.com> a écrit:
>
> > This change uses libdw facilities to interpret location expressions
> > instead of using libabigail's own mini-interpreter. With the fix for
> > elfutils https://sourceware.org/bugzilla/show_bug.cgi?id=28220 in
> > elfutils-0.186, abidw will correctly interpret Clang DWARF 5 symbol
> > addresses. Without that fix many declarations will not be linked to
> > their corresponding symbols due to the incorrect interpretation of
> > location attribute data.
> >
> >       * src/abg-dwarf-reader.cc (die_location_address): Use
> >       dwarf_attr_integrate, dwarf_getlocation and
> >       dwarf_getlocation_attr to decode addreses, instead of
> >       die_location_expr and eval_last_constant_dwarf_sub_expr.
> >       * tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi:
> >       Refresh test reference output; two more symbols have types.
>
> Thanks for looking into that.
>
> It seems to me that we can also do away with the use of eval_last_constant_dwarf_sub_expr from
> die_member_offset.  Would that work on your testing binaries?
>

I think I originally wrote the code just before a trip away and didn't
have the time to look into the other callers then.

>
> From what I am seeing, dwarf_getlocation_attr and dwarf_getlocation are
> present in elfutils 0.176 which is the oldest version that we need to
> support, so we should be able to ditch eval_last_constant_dwarf_sub_expr
> and its dependencies altogether.
>
> Or what am I missing?
>

I think it would be good if we could rely on elfutils for this functionality.

I've had a go at die_member_offset and I think I have it working (at
least with the test suite). I'll clean up what I have and post it.
There is considerable overlap with the address function.

I haven't been able to get die_virtual_function_index to work as
dwarf_getlocation_attr fails.  There may be a simpler recipe to follow
here.

If/when the 3 existing callers are working, there may be some code in
common to factor out as a new die_location_expr function.

Regards,
Giuliano.

>
> [...]
>
> Cheers,
>
> --
>                 Dodji
Giuliano Procida Nov. 24, 2021, 11:33 a.m. UTC | #4
Hi.

On Wed, 24 Nov 2021 at 11:11, Giuliano Procida <gprocida@google.com> wrote:
>
> Hi Dodji.
>
> On Tue, 23 Nov 2021 at 17:15, Dodji Seketeli <dodji@seketeli.org> wrote:
> >
> > [I am adding Mark to the list recipients as I am going to ask him a
> > question below]
> >
>
> Indeed, I forgot to CC him on the patch. Hi Mark.
>
> >
> > Hello,
> >
> > Giuliano Procida <gprocida@google.com> a écrit:
> >
> > > This change uses libdw facilities to interpret location expressions
> > > instead of using libabigail's own mini-interpreter. With the fix for
> > > elfutils https://sourceware.org/bugzilla/show_bug.cgi?id=28220 in
> > > elfutils-0.186, abidw will correctly interpret Clang DWARF 5 symbol
> > > addresses. Without that fix many declarations will not be linked to
> > > their corresponding symbols due to the incorrect interpretation of
> > > location attribute data.
> > >
> > >       * src/abg-dwarf-reader.cc (die_location_address): Use
> > >       dwarf_attr_integrate, dwarf_getlocation and
> > >       dwarf_getlocation_attr to decode addreses, instead of
> > >       die_location_expr and eval_last_constant_dwarf_sub_expr.
> > >       * tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi:
> > >       Refresh test reference output; two more symbols have types.
> >
> > Thanks for looking into that.
> >
> > It seems to me that we can also do away with the use of eval_last_constant_dwarf_sub_expr from
> > die_member_offset.  Would that work on your testing binaries?
> >
>
> I think I originally wrote the code just before a trip away and didn't
> have the time to look into the other callers then.
>
> >
> > From what I am seeing, dwarf_getlocation_attr and dwarf_getlocation are
> > present in elfutils 0.176 which is the oldest version that we need to
> > support, so we should be able to ditch eval_last_constant_dwarf_sub_expr
> > and its dependencies altogether.
> >
> > Or what am I missing?
> >
>
> I think it would be good if we could rely on elfutils for this functionality.
>
> I've had a go at die_member_offset and I think I have it working (at
> least with the test suite). I'll clean up what I have and post it.
> There is considerable overlap with the address function.
>
> I haven't been able to get die_virtual_function_index to work as
> dwarf_getlocation_attr fails.  There may be a simpler recipe to follow
> here.
>

My mistake, the problem is with base-class offsets, not vtable
indexes, so I don't have die_member_offset working after all. It's
possible an extra specialisation of the function for the right DWARF
"form" will fix this.

Giuliano.

> If/when the 3 existing callers are working, there may be some code in
> common to factor out as a new die_location_expr function.
>
> Regards,
> Giuliano.
>
> >
> > [...]
> >
> > Cheers,
> >
> > --
> >                 Dodji
Giuliano Procida Nov. 24, 2021, 11:44 a.m. UTC | #5
Last one I think.

On Wed, 24 Nov 2021 at 11:33, Giuliano Procida <gprocida@google.com> wrote:
>
> Hi.
>
> On Wed, 24 Nov 2021 at 11:11, Giuliano Procida <gprocida@google.com> wrote:
> >
> > Hi Dodji.
> >
> > On Tue, 23 Nov 2021 at 17:15, Dodji Seketeli <dodji@seketeli.org> wrote:
> > >
> > > [I am adding Mark to the list recipients as I am going to ask him a
> > > question below]
> > >
> >
> > Indeed, I forgot to CC him on the patch. Hi Mark.
> >
> > >
> > > Hello,
> > >
> > > Giuliano Procida <gprocida@google.com> a écrit:
> > >
> > > > This change uses libdw facilities to interpret location expressions
> > > > instead of using libabigail's own mini-interpreter. With the fix for
> > > > elfutils https://sourceware.org/bugzilla/show_bug.cgi?id=28220 in
> > > > elfutils-0.186, abidw will correctly interpret Clang DWARF 5 symbol
> > > > addresses. Without that fix many declarations will not be linked to
> > > > their corresponding symbols due to the incorrect interpretation of
> > > > location attribute data.
> > > >
> > > >       * src/abg-dwarf-reader.cc (die_location_address): Use
> > > >       dwarf_attr_integrate, dwarf_getlocation and
> > > >       dwarf_getlocation_attr to decode addreses, instead of
> > > >       die_location_expr and eval_last_constant_dwarf_sub_expr.
> > > >       * tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi:
> > > >       Refresh test reference output; two more symbols have types.
> > >
> > > Thanks for looking into that.
> > >
> > > It seems to me that we can also do away with the use of eval_last_constant_dwarf_sub_expr from
> > > die_member_offset.  Would that work on your testing binaries?
> > >
> >
> > I think I originally wrote the code just before a trip away and didn't
> > have the time to look into the other callers then.
> >
> > >
> > > From what I am seeing, dwarf_getlocation_attr and dwarf_getlocation are
> > > present in elfutils 0.176 which is the oldest version that we need to
> > > support, so we should be able to ditch eval_last_constant_dwarf_sub_expr
> > > and its dependencies altogether.
> > >
> > > Or what am I missing?
> > >
> >
> > I think it would be good if we could rely on elfutils for this functionality.
> >
> > I've had a go at die_member_offset and I think I have it working (at
> > least with the test suite). I'll clean up what I have and post it.
> > There is considerable overlap with the address function.
> >
> > I haven't been able to get die_virtual_function_index to work as
> > dwarf_getlocation_attr fails.  There may be a simpler recipe to follow
> > here.
> >
>
> My mistake, the problem is with base-class offsets, not vtable
> indexes, so I don't have die_member_offset working after all. It's
> possible an extra specialisation of the function for the right DWARF
> "form" will fix this.
>

I concur with Mark:

< 1><0x0000009e>    DW_TAG_structure_type
                      DW_AT_name                  s0
                      DW_AT_byte_size             0x00000030
                      DW_AT_decl_file             0x00000001
/home/dodji/git/libabigail/dwarf/tests/data/test-read-dwarf/test1.cc
                      DW_AT_decl_line             0x0000000d
                      DW_AT_containing_type       <0x0000009e>
                      DW_AT_sibling               <0x00000176>
< 2><0x000000ad>      DW_TAG_inheritance
                        DW_AT_type                  <0x00000029>
                        DW_AT_data_member_location  len 0x0006: 0x1206481c0622:
                            DW_OP_dup
                            DW_OP_deref
                            DW_OP_lit24
                            DW_OP_minus
                            DW_OP_deref
                            DW_OP_plus
                        DW_AT_virtuality            DW_VIRTUALITY_virtual
< 2><0x000000ba>      DW_TAG_inheritance
                        DW_AT_type                  <0x00000067>
                        DW_AT_data_member_location  len 0x0007:
0x120608201c0622:
                            DW_OP_dup
                            DW_OP_deref
                            DW_OP_const1u 32
                            DW_OP_minus
                            DW_OP_deref
                            DW_OP_plus
                        DW_AT_virtuality            DW_VIRTUALITY_virtual

Unless there is some exposed elfutils function that will interpret
these member locations for us, that code will still be needed in
libabigail.

> Giuliano.
>
> > If/when the 3 existing callers are working, there may be some code in
> > common to factor out as a new die_location_expr function.
> >
> > Regards,
> > Giuliano.
> >
> > >
> > > [...]
> > >
> > > Cheers,
> > >
> > > --
> > >                 Dodji
diff mbox series

Patch

diff --git a/src/abg-dwarf-reader.cc b/src/abg-dwarf-reader.cc
index ec92f3f8..8ba7525b 100644
--- a/src/abg-dwarf-reader.cc
+++ b/src/abg-dwarf-reader.cc
@@ -8814,18 +8814,31 @@  die_location_address(Dwarf_Die*	die,
   uint64_t expr_len = 0;
 
   is_tls_address = false;
-  if (!die_location_expr(die, DW_AT_location, &expr, &expr_len))
+
+  if (!die)
+    return false;
+
+  Dwarf_Attribute attr;
+  if (!dwarf_attr_integrate(const_cast<Dwarf_Die*>(die), DW_AT_location, &attr))
     return false;
 
-  int64_t addr = 0;
-  if (!eval_last_constant_dwarf_sub_expr(expr, expr_len, addr, is_tls_address))
+  if (dwarf_getlocation(&attr, &expr, &expr_len))
+    return false;
+  // Ignore location expressions where reading them succeeded but
+  // their length is 0.
+  if (expr_len == 0)
     return false;
 
-  address = addr;
+  Dwarf_Attribute result;
+  if (!dwarf_getlocation_attr(&attr, expr, &result))
+    // A location that has been interpreted as an address.
+    return !dwarf_formaddr(&result, &address);
+
+  // Just get the address out of the number field.
+  address = expr->number;
   return true;
 }
 
-
 /// Return the index of a function in its virtual table.  That is,
 /// return the value of the DW_AT_vtable_elem_location attribute.
 ///
diff --git a/tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi b/tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi
index 0e6e8af4..59e1e483 100644
--- a/tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi
+++ b/tests/data/test-read-dwarf/PR25042-libgdbm-clang-dwarf5.so.6.0.0.abi
@@ -639,6 +639,14 @@ 
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='gdbmerrno.c' comp-dir-path='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src' language='LANG_C99'>
+    <array-type-def dimensions='1' type-id='type-id-80' size-in-bits='2560' id='type-id-81'>
+      <subrange length='40' type-id='type-id-21' id='type-id-82'/>
+    </array-type-def>
+    <array-type-def dimensions='1' type-id='type-id-83' size-in-bits='1280' id='type-id-84'>
+      <subrange length='40' type-id='type-id-21' id='type-id-82'/>
+    </array-type-def>
+    <qualified-type-def type-id='type-id-56' const='yes' id='type-id-80'/>
+    <qualified-type-def type-id='type-id-8' const='yes' id='type-id-83'/>
     <pointer-type-def type-id='type-id-8' size-in-bits='64' id='type-id-16'/>
     <function-decl name='gdbm_errno_location' mangled-name='gdbm_errno_location' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='29' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_errno_location'>
       <return type-id='type-id-16'/>
@@ -665,6 +673,7 @@ 
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='88' column='1'/>
       <return type-id='type-id-11'/>
     </function-decl>
+    <var-decl name='gdbm_errlist' type-id='type-id-81' mangled-name='gdbm_errlist' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='102' column='1' elf-symbol-id='gdbm_errlist'/>
     <function-decl name='gdbm_strerror' mangled-name='gdbm_strerror' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='146' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_strerror'>
       <parameter type-id='type-id-36' name='error' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='146' column='1'/>
       <return type-id='type-id-56'/>
@@ -673,6 +682,7 @@ 
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='154' column='1'/>
       <return type-id='type-id-56'/>
     </function-decl>
+    <var-decl name='gdbm_syserr' type-id='type-id-84' mangled-name='gdbm_syserr' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='178' column='1' elf-symbol-id='gdbm_syserr'/>
     <function-decl name='gdbm_check_syserr' mangled-name='gdbm_check_syserr' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='193' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_check_syserr'>
       <parameter type-id='type-id-36' name='n' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmerrno.c' line='193' column='1'/>
       <return type-id='type-id-8'/>
@@ -727,11 +737,11 @@ 
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='gdbmload.c' comp-dir-path='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src' language='LANG_C99'>
-    <array-type-def dimensions='1' type-id='type-id-80' size-in-bits='256' id='type-id-81'>
-      <subrange length='2' type-id='type-id-21' id='type-id-82'/>
+    <array-type-def dimensions='1' type-id='type-id-85' size-in-bits='256' id='type-id-86'>
+      <subrange length='2' type-id='type-id-21' id='type-id-87'/>
     </array-type-def>
     <type-decl name='unsigned char' size-in-bits='8' id='type-id-1'/>
-    <class-decl name='datbuf' size-in-bits='128' is-struct='yes' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='24' column='1' id='type-id-80'>
+    <class-decl name='datbuf' size-in-bits='128' is-struct='yes' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='24' column='1' id='type-id-85'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='buffer' type-id='type-id-4' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='26' column='1'/>
       </data-member>
@@ -739,7 +749,7 @@ 
         <var-decl name='size' type-id='type-id-6' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='27' column='1'/>
       </data-member>
     </class-decl>
-    <class-decl name='dump_file' size-in-bits='896' is-struct='yes' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='30' column='1' id='type-id-83'>
+    <class-decl name='dump_file' size-in-bits='896' is-struct='yes' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='30' column='1' id='type-id-88'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='fp' type-id='type-id-76' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='32' column='1'/>
       </data-member>
@@ -768,63 +778,63 @@ 
         <var-decl name='parmc' type-id='type-id-6' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='43' column='1'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='576'>
-        <var-decl name='data' type-id='type-id-81' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='45' column='1'/>
+        <var-decl name='data' type-id='type-id-86' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='45' column='1'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='832'>
         <var-decl name='header' type-id='type-id-17' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='46' column='1'/>
       </data-member>
     </class-decl>
-    <pointer-type-def type-id='type-id-9' size-in-bits='64' id='type-id-84'/>
-    <pointer-type-def type-id='type-id-19' size-in-bits='64' id='type-id-85'/>
-    <pointer-type-def type-id='type-id-83' size-in-bits='64' id='type-id-86'/>
+    <pointer-type-def type-id='type-id-9' size-in-bits='64' id='type-id-89'/>
+    <pointer-type-def type-id='type-id-19' size-in-bits='64' id='type-id-90'/>
+    <pointer-type-def type-id='type-id-88' size-in-bits='64' id='type-id-91'/>
     <pointer-type-def type-id='type-id-6' size-in-bits='64' id='type-id-7'/>
     <pointer-type-def type-id='type-id-1' size-in-bits='64' id='type-id-4'/>
-    <pointer-type-def type-id='type-id-34' size-in-bits='64' id='type-id-87'/>
+    <pointer-type-def type-id='type-id-34' size-in-bits='64' id='type-id-92'/>
     <function-decl name='get_len' mangled-name='get_len' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='230' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='get_len'>
       <parameter type-id='type-id-56' name='param' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='230' column='1'/>
       <parameter type-id='type-id-7' name='plen' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='230' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
     <function-decl name='read_record' mangled-name='read_record' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='read_record'>
-      <parameter type-id='type-id-86' name='file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1'/>
+      <parameter type-id='type-id-91' name='file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1'/>
       <parameter type-id='type-id-17' name='param' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1'/>
       <parameter type-id='type-id-8' name='n' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1'/>
-      <parameter type-id='type-id-85' name='dat' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1'/>
+      <parameter type-id='type-id-90' name='dat' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='251' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
     <function-decl name='_gdbm_load_file' mangled-name='_gdbm_load_file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='394' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_gdbm_load_file'>
-      <parameter type-id='type-id-86' name='file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='394' column='1'/>
+      <parameter type-id='type-id-91' name='file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='394' column='1'/>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='394' column='1'/>
-      <parameter type-id='type-id-84' name='ofp' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='394' column='1'/>
+      <parameter type-id='type-id-89' name='ofp' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='394' column='1'/>
       <parameter type-id='type-id-8' name='replace' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='395' column='1'/>
       <parameter type-id='type-id-8' name='meta_mask' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='395' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
     <function-decl name='gdbm_load_bdb_dump' mangled-name='gdbm_load_bdb_dump' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='533' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_load_bdb_dump'>
-      <parameter type-id='type-id-86' name='file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='533' column='1'/>
+      <parameter type-id='type-id-91' name='file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='533' column='1'/>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='533' column='1'/>
       <parameter type-id='type-id-8' name='replace' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='533' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
     <function-decl name='gdbm_load_from_file' mangled-name='gdbm_load_from_file' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='570' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_load_from_file'>
-      <parameter type-id='type-id-84' name='pdbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='570' column='1'/>
+      <parameter type-id='type-id-89' name='pdbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='570' column='1'/>
       <parameter type-id='type-id-76' name='fp' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='570' column='1'/>
       <parameter type-id='type-id-8' name='replace' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='570' column='1'/>
       <parameter type-id='type-id-8' name='meta_mask' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='571' column='1'/>
-      <parameter type-id='type-id-87' name='line' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='572' column='1'/>
+      <parameter type-id='type-id-92' name='line' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='572' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
     <function-decl name='gdbm_load' mangled-name='gdbm_load' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='623' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_load'>
-      <parameter type-id='type-id-84' name='pdbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='623' column='1'/>
+      <parameter type-id='type-id-89' name='pdbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='623' column='1'/>
       <parameter type-id='type-id-56' name='filename' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='623' column='1'/>
       <parameter type-id='type-id-8' name='replace' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='623' column='1'/>
       <parameter type-id='type-id-8' name='meta_mask' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='624' column='1'/>
-      <parameter type-id='type-id-87' name='line' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='625' column='1'/>
+      <parameter type-id='type-id-92' name='line' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmload.c' line='625' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='gdbmopen.c' comp-dir-path='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src' language='LANG_C99'>
-    <pointer-type-def type-id='type-id-38' size-in-bits='64' id='type-id-88'/>
+    <pointer-type-def type-id='type-id-38' size-in-bits='64' id='type-id-93'/>
     <pointer-type-def type-id='type-id-14' size-in-bits='64' id='type-id-15'/>
     <function-decl name='gdbm_avail_table_valid_p' mangled-name='gdbm_avail_table_valid_p' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='82' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_avail_table_valid_p'>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='82' column='1'/>
@@ -834,7 +844,7 @@ 
     </function-decl>
     <function-decl name='gdbm_avail_block_validate' mangled-name='gdbm_avail_block_validate' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='110' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_avail_block_validate'>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='110' column='1'/>
-      <parameter type-id='type-id-88' name='avblk' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='110' column='1'/>
+      <parameter type-id='type-id-93' name='avblk' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='110' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
     <function-decl name='gdbm_bucket_avail_table_validate' mangled-name='gdbm_bucket_avail_table_validate' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/gdbmopen.c' line='122' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_bucket_avail_table_validate'>
@@ -944,8 +954,8 @@ 
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='mmap.c' comp-dir-path='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src' language='LANG_C99'>
-    <typedef-decl name='__ssize_t' type-id='type-id-31' filepath='/usr/include/bits/types.h' line='193' column='1' id='type-id-89'/>
-    <typedef-decl name='ssize_t' type-id='type-id-89' filepath='/usr/include/sys/types.h' line='108' column='1' id='type-id-90'/>
+    <typedef-decl name='__ssize_t' type-id='type-id-31' filepath='/usr/include/bits/types.h' line='193' column='1' id='type-id-94'/>
+    <typedef-decl name='ssize_t' type-id='type-id-94' filepath='/usr/include/sys/types.h' line='108' column='1' id='type-id-95'/>
     <function-decl name='_gdbm_file_size' mangled-name='_gdbm_file_size' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='60' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_gdbm_file_size'>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='60' column='1'/>
       <parameter type-id='type-id-53' name='psize' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='60' column='1'/>
@@ -974,13 +984,13 @@ 
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='235' column='1'/>
       <parameter type-id='type-id-20' name='buffer' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='235' column='1'/>
       <parameter type-id='type-id-6' name='len' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='235' column='1'/>
-      <return type-id='type-id-90'/>
+      <return type-id='type-id-95'/>
     </function-decl>
     <function-decl name='_gdbm_mapped_write' mangled-name='_gdbm_mapped_write' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='289' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_gdbm_mapped_write'>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='289' column='1'/>
       <parameter type-id='type-id-20' name='buffer' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='289' column='1'/>
       <parameter type-id='type-id-6' name='len' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='289' column='1'/>
-      <return type-id='type-id-90'/>
+      <return type-id='type-id-95'/>
     </function-decl>
     <function-decl name='_gdbm_mapped_lseek' mangled-name='_gdbm_mapped_lseek' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='346' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='_gdbm_mapped_lseek'>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/mmap.c' line='346' column='1'/>
@@ -994,10 +1004,10 @@ 
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='recover.c' comp-dir-path='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src' language='LANG_C99'>
-    <type-decl name='variadic parameter type' id='type-id-91'/>
-    <class-decl name='gdbm_recovery_s' size-in-bits='704' is-struct='yes' visibility='default' filepath='./gdbm.h' line='137' column='1' id='type-id-92'>
+    <type-decl name='variadic parameter type' id='type-id-96'/>
+    <class-decl name='gdbm_recovery_s' size-in-bits='704' is-struct='yes' visibility='default' filepath='./gdbm.h' line='137' column='1' id='type-id-97'>
       <data-member access='public' layout-offset-in-bits='0'>
-        <var-decl name='errfun' type-id='type-id-93' visibility='default' filepath='./gdbm.h' line='142' column='1'/>
+        <var-decl name='errfun' type-id='type-id-98' visibility='default' filepath='./gdbm.h' line='142' column='1'/>
       </data-member>
       <data-member access='public' layout-offset-in-bits='64'>
         <var-decl name='data' type-id='type-id-20' visibility='default' filepath='./gdbm.h' line='143' column='1'/>
@@ -1030,9 +1040,9 @@ 
         <var-decl name='backup_name' type-id='type-id-17' visibility='default' filepath='./gdbm.h' line='156' column='1'/>
       </data-member>
     </class-decl>
-    <typedef-decl name='gdbm_recovery' type-id='type-id-92' filepath='./gdbm.h' line='157' column='1' id='type-id-94'/>
-    <pointer-type-def type-id='type-id-94' size-in-bits='64' id='type-id-95'/>
-    <pointer-type-def type-id='type-id-96' size-in-bits='64' id='type-id-93'/>
+    <typedef-decl name='gdbm_recovery' type-id='type-id-97' filepath='./gdbm.h' line='157' column='1' id='type-id-99'/>
+    <pointer-type-def type-id='type-id-99' size-in-bits='64' id='type-id-100'/>
+    <pointer-type-def type-id='type-id-101' size-in-bits='64' id='type-id-98'/>
     <function-decl name='gdbm_copy_meta' mangled-name='gdbm_copy_meta' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='23' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_copy_meta'>
       <parameter type-id='type-id-9' name='dst' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='23' column='1'/>
       <parameter type-id='type-id-9' name='src' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='23' column='1'/>
@@ -1045,11 +1055,11 @@ 
     </function-decl>
     <function-decl name='gdbm_recover' mangled-name='gdbm_recover' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='351' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_recover'>
       <parameter type-id='type-id-9' name='dbf' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='351' column='1'/>
-      <parameter type-id='type-id-95' name='rcvr' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='351' column='1'/>
+      <parameter type-id='type-id-100' name='rcvr' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='351' column='1'/>
       <parameter type-id='type-id-8' name='flags' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/recover.c' line='351' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
-    <function-type size-in-bits='64' id='type-id-96'>
+    <function-type size-in-bits='64' id='type-id-101'>
       <parameter type-id='type-id-20'/>
       <parameter type-id='type-id-56'/>
       <parameter is-variadic='yes'/>
@@ -1068,11 +1078,15 @@ 
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='version.c' comp-dir-path='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src' language='LANG_C99'>
-    <qualified-type-def type-id='type-id-8' const='yes' id='type-id-97'/>
-    <pointer-type-def type-id='type-id-97' size-in-bits='64' id='type-id-98'/>
+    <array-type-def dimensions='1' type-id='type-id-83' size-in-bits='96' id='type-id-102'>
+      <subrange length='3' type-id='type-id-21' id='type-id-103'/>
+    </array-type-def>
+    <pointer-type-def type-id='type-id-83' size-in-bits='64' id='type-id-104'/>
+    <var-decl name='gdbm_version' type-id='type-id-56' mangled-name='gdbm_version' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='26' column='1' elf-symbol-id='gdbm_version'/>
+    <var-decl name='gdbm_version_number' type-id='type-id-102' mangled-name='gdbm_version_number' visibility='default' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='32' column='1' elf-symbol-id='gdbm_version_number'/>
     <function-decl name='gdbm_version_cmp' mangled-name='gdbm_version_cmp' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='39' column='1' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='gdbm_version_cmp'>
-      <parameter type-id='type-id-98' name='a' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='39' column='1'/>
-      <parameter type-id='type-id-98' name='b' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='39' column='1'/>
+      <parameter type-id='type-id-104' name='a' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='39' column='1'/>
+      <parameter type-id='type-id-104' name='b' filepath='/tmp/ben/spack-stage/spack-stage-dQKT1q/spack-src/src/version.c' line='39' column='1'/>
       <return type-id='type-id-8'/>
     </function-decl>
   </abi-instr>