https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81996
--- Comment #3 from Sergei Trofimovich <slyfox at inbox dot ru> --- Built vanilla gcc from head to make sure it's not local patches. -fstack-protector-all is the trigger breaking return address: Target: powerpc-unknown-linux-gnu Configured with: ../gcc/configure --prefix=/root/gcc-installed Thread model: posix gcc version 8.0.0 20170827 (experimental) (GCC) $ gcc-installed/bin/gcc -O2 a.c -o a -fPIC -fstack-protector-all && ./a main =0x1000030c ret_addr=0x7c641b78 $ gcc-installed/bin/gcc -O2 a.c -o a -fno-PIC -fstack-protector-all && ./a main =0x10000310 ret_addr=0x10000344
