https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105910
Bug ID: 105910
Summary: ICE: with -O1 optimization level and code calling
__builtin_return_address
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: k.even-mendoza at imperial dot ac.uk
Target Milestone: ---
This code (reduced):
===
int a;
void b() {
a = ((long)__builtin_return_address(0) ^ (long)__builtin_return_address(0)) *
(long)__builtin_return_address(524288);
}
int main(void) { return 0;}
===
crashed the compiler with -O1: gcc -O1 test4.c
gcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
====
It works fine with other optimization levels including -O0. It happens with
gcc-11, gcc-12 and gcc-13 (tested with 20220606); with gcc-10 and below it
seems to work fine also with -O1.
