https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92471
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> --- It also affected bootstrap-lto-lean with PGO: [12135s] ../../gcc/ada/libgnat/s-except.ads:61:4: note: code may be misoptimized unless '-fno-strict-aliasing' is used [12136s] during IPA pass: cp [12136s] lto1: internal compiler error: Segmentation fault [12136s] 0x725fa9 ??? [12136s] ../sysdeps/x86_64/start.S:120 [12136s] Please submit a full bug report, [12136s] with preprocessed source if appropriate. [12136s] Please include the complete backtrace with any bug report. [12136s] See <https://bugs.opensuse.org/> for instructions. [12136s] lto-wrapper: fatal error: /home/abuild/rpmbuild/BUILD/gcc-10.0.0+r278058/obj-x86_64-suse-linux/./prev-gcc/xg++ returned 1 exit status [12136s] compilation terminated. [12136s] /usr/x86_64-suse-linux/bin/ld: error: lto-wrapper failed [12136s] collect2: error: ld returned 1 exit status