binutils-gdb/gdb/testsuite/gdb.cp/constexpr-field.cc
Tom Tromey 4330d61dfb Fix crash in cp_print_value_fields
PR c++/20020 concerns a crash in cp_print_value_fields.  The immediate
cause is that cp_print_value_fields does not handle the case where
value_static_field fails.  This is fixed in this patch by calling
cp_print_static_field from the "try" block.

Digging a bit deeper, the error occurs because GCC does not emit a
DW_AT_const_value for a static constexpr member appearing in a
template class.  I've filed a GCC bug for this.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-05-29  Tom Tromey  <tromey@adacore.com>

	PR c++/20020:
	* cp-valprint.c (cp_print_value_fields): Call
	cp_print_static_field inside "try".

gdb/testsuite/ChangeLog
2019-05-29  Tom Tromey  <tromey@adacore.com>

	PR c++/20020:
	* gdb.cp/constexpr-field.exp: New file.
	* gdb.cp/constexpr-field.cc: New file.
2019-05-29 09:44:09 -06:00

38 lines
917 B
C++

/* This testcase is part of GDB, the GNU debugger.
Copyright 2019 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/>. */
template<typename T>
struct X
{
static constexpr bool f = true;
};
X<int> x;
struct Y
{
static constexpr bool f = true;
};
Y y;
int
main (void)
{
return 0;
}