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| author | Gary Benson <gbenson@redhat.com> | 2014-06-19 09:13:57 +0100 |
|---|---|---|
| committer | Gary Benson <gbenson@redhat.com> | 2014-06-19 09:13:57 +0100 |
| commit | 992c7d700f99002ed455b0588488e0e42719ba81 (patch) | |
| tree | c24351fbcff74f41550b27263995ec03be1988ed /gdb/config.in | |
| parent | eae7090bea9d7f129be7dddf89f8e177cdb2003d (diff) | |
| download | gdb-992c7d700f99002ed455b0588488e0e42719ba81.zip gdb-992c7d700f99002ed455b0588488e0e42719ba81.tar.gz gdb-992c7d700f99002ed455b0588488e0e42719ba81.tar.bz2 | |
Demangler crash handler
This commit wraps calls to the demangler with a segmentation fault
handler. The first time a segmentation fault is caught a core file
is generated and the user is prompted to file a bug and offered the
choice to exit or to continue their GDB session. A maintainence
option is provided to allow the user to disable the crash handler
if required.
gdb/
2014-06-19 Gary Benson <gbenson@redhat.com>
* configure.ac [AC_CHECK_FUNCS] <sigaltstack>: New check.
* configure: Regenerate.
* config.in: Likewise.
* main.c (signal.h): New include.
(setup_alternate_signal_stack): New function.
(captured_main): Call the above.
* cp-support.c (signal.h): New include.
(catch_demangler_crashes): New flag.
(SIGJMP_BUF): New define.
(SIGSETJMP): Likewise.
(SIGLONGJMP): Likewise.
(gdb_demangle_jmp_buf): New static global.
(gdb_demangle_attempt_core_dump): Likewise.
(gdb_demangle_signal_handler): New function.
(gdb_demangle): If catch_demangler_crashes is set, install the
above signal handler before calling bfd_demangle, and restore
the original signal handler afterwards. Display the offending
symbol and call demangler_warning the first time a segmentation
fault is caught.
(_initialize_cp_support): New maint set/show command.
gdb/doc/
2014-06-19 Gary Benson <gbenson@redhat.com>
* gdb.texinfo (Maintenance Commands): Document new
"maint set/show catch-demangler-crashes" option.
Diffstat (limited to 'gdb/config.in')
| -rw-r--r-- | gdb/config.in | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gdb/config.in b/gdb/config.in index cd4ce92..8585b49 100644 --- a/gdb/config.in +++ b/gdb/config.in @@ -366,6 +366,9 @@ /* Define to 1 if you have the `sigaction' function. */ #undef HAVE_SIGACTION +/* Define to 1 if you have the `sigaltstack' function. */ +#undef HAVE_SIGALTSTACK + /* Define to 1 if you have the <signal.h> header file. */ #undef HAVE_SIGNAL_H |