https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58372
--- Comment #23 from Terry Guo <xuepeng.guo at intel dot com> ---
Hi Uroš:
With your fix, I identified two regressions so far: one is that we should run
the case you provided with c++ standard newer than c++11. The 'noexcept' was
introduced in c++14. Guess we need a directive like "{ ! target c++14_down }".
Another regression is related to -fsanitize=address shown as below:
./gcc/cc1plus use-after-scope-types-5.ii -quiet -m32 -O0 -fsanitize=address
-o use-after-scope-types-5.s
during RTL pass: expand
In file included from
/export/users/xuepengg/58372-ice-stack-alignment/gcc/gcc/testsuite/g++.dg/asan/use-after-scope-types-5.C:4:
/export/users/xuepengg/58372-ice-stack-alignment/gcc/gcc/testsuite/g++.dg/asan/use-after-scope-types.h:
In function ‘void test() [with T = char [1000]]’:
/export/users/xuepengg/58372-ice-stack-alignment/gcc/gcc/testsuite/g++.dg/asan/use-after-scope-types.h:22:51:
internal compiler error: in safe_as_a, at is-a.h:210
22 | template <class T> __attribute__((noinline)) void test() {
| ^~~~
0x11d5b1f rtx_insn* safe_as_a<rtx_insn*, rtx_def>(rtx_def*)
../../gcc/gcc/is-a.h:210
0x11d5b1f NEXT_INSN(rtx_insn const*)
../../gcc/gcc/rtl.h:1461
0x11d5b1f ix86_get_drap_rtx
../../gcc/gcc/config/i386/i386.c:12050
0xa92e12 emit_library_call_value_1(int, rtx_def*, rtx_def*, libcall_type,
machine_mode, int, std::pair<rtx_def*, machine_mode>*)
../../gcc/gcc/calls.c:4757
0xecc975 emit_library_call(rtx_def*, libcall_type, machine_mode, rtx_def*,
machine_mode, rtx_def*, machine_mode, rtx_def*, machine_mode)
../../gcc/gcc/rtl.h:4149
0xecc975 asan_emit_stack_protection(rtx_def*, rtx_def*, unsigned int, long*,
tree_node**, int)
../../gcc/gcc/asan.c:1500
0xaa53ff expand_used_vars
../../gcc/gcc/cfgexpand.c:2273
0xaa6d13 execute
../../gcc/gcc/cfgexpand.c:6268
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
