Show line numbers in output for "info var/func/type"
Commit Message
The GDB commands "info variables", "info functions", and "info types" show
the appropriate list of definitions matching the given pattern. They also
group them by source files. But no line numbers within these source files
are shown.
The line number information is particularly useful to the user when a
simple "grep" doesn't readily point to a definition. This is often the
case when the definition involves a macro, occurs within a namespace, or
when the identifier appears very frequently in the source file.
This patch enriches the printout of these commands by the line numbers and
adjusts affected test cases to the changed output where necessary. The
new output looks like this:
(gdb) i variables
All defined variables:
File foo.c:
3: const char * const foo;
1: int x;
The line number is followed by a colon and a tab character, which is then
followed by the symbol definition. If no line number is available, the
tab is printed out anyhow, so definitions line up.
gdb/ChangeLog:
* symtab.c (print_symbol_info): Precede the symbol definition by
the line number when available.
* NEWS: Advertise this enhancement.
gdb/testsuite/ChangeLog:
* gdb.ada/info_types.exp: Adjust expected output to the line
numbers now printed by "info var/func/type".
* gdb.base/completion.exp: Likewise.
* gdb.base/included.exp: Likewise.
* gdb.cp/cp-relocate.exp: Likewise.
* gdb.cp/cplusfuncs.exp: Likewise.
* gdb.cp/namespace.exp: Likewise.
* gdb.dwarf2/dw2-case-insensitive.exp: Likewise.
---
gdb/NEWS | 3 +++
gdb/symtab.c | 5 +++++
gdb/testsuite/gdb.ada/info_types.exp | 2 +-
gdb/testsuite/gdb.base/completion.exp | 2 +-
gdb/testsuite/gdb.base/included.exp | 2 +-
gdb/testsuite/gdb.cp/cp-relocate.exp | 4 ++--
gdb/testsuite/gdb.cp/cplusfuncs.exp | 2 +-
gdb/testsuite/gdb.cp/namespace.exp | 4 ++--
gdb/testsuite/gdb.dwarf2/dw2-case-insensitive.exp | 2 +-
9 files changed, 17 insertions(+), 9 deletions(-)
Comments
> From: Andreas Arnez <arnez@linux.vnet.ibm.com>
> Date: Wed, 04 Apr 2018 20:53:00 +0200
>
> gdb/ChangeLog:
>
> * symtab.c (print_symbol_info): Precede the symbol definition by
> the line number when available.
> * NEWS: Advertise this enhancement.
Thanks, but I think the manual should also be updated. The NEWS part
of the patch is OK.
@@ -3,6 +3,9 @@
*** Changes since GDB 8.1
+* The commands 'info variables/functions/types' now show the source line
+ numbers of symbol definitions when available.
+
* 'info proc' now works on running processes on FreeBSD systems and core
files created on FreeBSD systems.
@@ -4517,6 +4517,11 @@ print_symbol_info (enum search_domain kind,
fputs_filtered (":\n", gdb_stdout);
}
+ if (SYMBOL_LINE (sym) != 0)
+ printf_filtered ("%d:\t", SYMBOL_LINE (sym));
+ else
+ puts_filtered ("\t");
+
if (kind != TYPES_DOMAIN && block == STATIC_BLOCK)
printf_filtered ("static ");
@@ -27,5 +27,5 @@ gdb_test "set lang ada" ""
set eol "\[\r\n\]+"
gdb_test "info types new_integer_type" \
- "All types matching regular expression \"new_integer_type\":${eol}File .*info_types.c:${eol}int"
+ "All types matching regular expression \"new_integer_type\":${eol}File .*info_types.c:${eol}.*\tint"
@@ -749,7 +749,7 @@ gdb_test_multiple "" "$test" {
-re "marker1.*$gdb_prompt " {
send_gdb "\n"
gdb_test_multiple "" "$test" {
- -re "All functions matching regular expression \"marker\":.*File.*break1.c:\r\nint marker1\\((void|)\\);\r\nint marker2\\(int\\).*marker3\\(char.*char.*\\).*marker4\\(long( int)?\\);.*$gdb_prompt $" {
+ -re "All functions matching regular expression \"marker\":.*File.*break1.c:.*\tint marker1\\((void|)\\);\r\n.*:\tint marker2\\(int\\).*marker3\\(char.*char.*\\).*marker4\\(long( int)?\\);.*$gdb_prompt $" {
pass "$test"
}
}
@@ -33,4 +33,4 @@ gdb_test "ptype integer" "type = int"
# We should report that integer comes from the header file.
if { $non_dwarf } { setup_xfail *-*-* }
-gdb_test "info variables integer" "\r\nFile \[^\r\n\]*/${subdir}/${testfile}.h:\r\nint integer;"
+gdb_test "info variables integer" "\r\nFile \[^\r\n\]*/${subdir}/${testfile}.h:\r\n.*\tint integer;"
@@ -56,11 +56,11 @@ gdb_file_cmd ${binfile}
set func1_name ""
set func2_name ""
gdb_test_multiple "info functions func<.>" "info functions" {
- -re "\r\nint (\[^\r\]*func<1>\[^\r]*);" {
+ -re "\tint (\[^\r\]*func<1>\[^\r]*);" {
set func1_name $expect_out(1,string)
exp_continue
}
- -re "\r\nint (\[^\r\]*func<2>\[^\r]*);" {
+ -re "\tint (\[^\r\]*func<2>\[^\r]*);" {
set func2_name $expect_out(1,string)
exp_continue
}
@@ -292,7 +292,7 @@ proc info_func_regexp { name demangled } {
regsub {\\\(void\\\)} $demangled {\(\)} demangled
gdb_test "info function $name" \
- "File .*:\r\n(class|)${demangled}.*" \
+ "File .*:\t(class|)${demangled}.*" \
"info function for \"$name\""
}
@@ -95,10 +95,10 @@ gdb_test_multiple "ptype ina" "ptype ina" {
setup_xfail hppa*-*-*11* CLLbs14869
gdb_test_multiple "info func xyzq" "info func xyzq" {
- -re "All functions.*File.*namespace.cc:\r\nint AAA::A_xyzq\\(int\\);\r\nint BBB::B_xyzq\\(int\\);\r\nchar AAA::xyzq\\(char\\);\r\nchar BBB::xyzq\\(char\\);\r\nchar BBB::CCC::xyzq\\(char\\);\r\nchar BBB::Class::xyzq\\(char\\);\r\n$gdb_prompt $" {
+ -re "All functions.*File.*namespace.cc:\r\n.*\tint AAA::A_xyzq\\(int\\);\r\n.*\tint BBB::B_xyzq\\(int\\);\r\n.*\tchar AAA::xyzq\\(char\\);\r\n.*\tchar BBB::xyzq\\(char\\);\r\n.*\tchar BBB::CCC::xyzq\\(char\\);\r\n.*\tchar BBB::Class::xyzq\\(char\\);\r\n$gdb_prompt $" {
pass "info func xyzq"
}
- -re "All functions.*File.*namespace.cc:\r\nint AAA::A_xyzq\\(int\\);\r\nchar AAA::xyzq\\(char\\);\r\nint BBB::B_xyzq\\(int\\);\r\nchar BBB::CCC::xyzq\\(char\\);\r\nchar BBB::Class::xyzq\\(char\\);\r\nchar BBB::xyzq\\(char\\);\r\n$gdb_prompt $" {
+ -re "All functions.*File.*namespace.cc:\r\n.*\tint AAA::A_xyzq\\(int\\);\r\n.*\tchar AAA::xyzq\\(char\\);\r\n.*\tint BBB::B_xyzq\\(int\\);\r\n.*\tchar BBB::CCC::xyzq\\(char\\);\r\n.*\tchar BBB::Class::xyzq\\(char\\);\r\n.*\tchar BBB::xyzq\\(char\\);\r\n$gdb_prompt $" {
pass "info func xyzq"
}
}
@@ -43,7 +43,7 @@ gdb_test "set case-sensitive off" {warning: the current case sensitivity setting
# The dot-leading symbol is for ppc64 function descriptors.
gdb_test "info functions fUnC_lang" \
- "All functions matching regular expression \"fUnC_lang\":\[\r\n\]+File file1.txt:\r\nfoo FUNC_lang\\(void\\);(\r\n\r\nNon-debugging symbols:\r\n0x\[0-9a-f\]+ +\\.FUNC_lang)?" \
+ "All functions matching regular expression \"fUnC_lang\":\[\r\n\]+File file1.txt:\r\n\tfoo FUNC_lang\\(void\\);(\r\n\r\nNon-debugging symbols:\r\n0x\[0-9a-f\]+ +\\.FUNC_lang)?" \
"regexp case-sensitive off"
gdb_test "p fuNC_lang" { = {foo \(void\)} 0x[0-9a-f]+ <FUNC_lang>}