https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88818
Bug ID: 88818
Summary: Segfault with vtable-verify LTO optimization
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jagapeyev at gmail dot com
Target Milestone: ---
struct a {
virtual int b();
};
void c() {}
Compiling the above program with:
g++ -c test.cpp -O1 -flto -fvtable-verify=preinit
Results in the following error:
during GIMPLE pass: ealias
test.cpp: In function ‘_GLOBAL__sub_I.00099__Z1cv’:
test.cpp:4:11: internal compiler error: Segmentation fault
void c() {}
^
Attached is the full gcc -v -save-temps output.
>From preliminary tests, -fvtable-verify=std vs -fvtable-verify=preinit makes no
difference.
Error does not exist with -O0 or -Og, but does exist at -O1 and higher.
