forked from Imagelibrary/binutils-gdb
d2f6771173
A user noticed that when an Ada program (including the runtime) is compiled with -flto, then "catch exception" does not work -- even though setting the equivalent breakpoint by hand does work. Looking into this, it turns out that GCC puts the exception functions from the Ada runtime into a CU that uses the C language, not Ada. Then, when trying to look up the relevant symbol, lookup_name_info::search_name_hash uses the "verbatim" form of the symbol name (like "<__gnat_debug_raise_exception>") rather than the "<>"-less form, causing the symbol not to be found. This patch fixes the problem in two steps. First, lookup_name_info::search_name_hash is changed to use the same hack that language_defn::get_symbol_name_matcher uses. That is, when the current language is Ada, verbatim-mode lookups are special-cased. (This is a bit unfortunate; perhaps a better long term approach would be to promote verbatim mode to a fundamental mode of lookup_name_info.) Second, although the above fixes the problem in the Ada language mode, the code still fails in other languages. However, due to the way these lookups are coded in ada-lang.c, I think it makes sense to temporarily set the current language to Ada in create_ada_exception_catchpoint. Tested on x86-64 Fedora 38. A new test case that mimics the -flto scenario is included. Reviewed-By: Alexandra Petlanova Hajkova <ahajkova@redhat.com>
41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/* This test program is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2024 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
/* We need a few extra functions here to ensure that the dictionary
|
|
for the global block has more than one slot. */
|
|
|
|
void f1 () { }
|
|
void f2 () { }
|
|
void f3 () { }
|
|
void f4 () { }
|
|
|
|
void
|
|
__gnat_debug_raise_exception ()
|
|
{
|
|
}
|
|
|
|
void
|
|
__gnat_begin_handler_v1 ()
|
|
{
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
return 0;
|
|
}
|