https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86947
--- Comment #4 from Vinay Kumar <vinay.m.engg at gmail dot com> --- Hi Richard, Thanks for checking the bug. Please find attached the testcase that would exit with message "Should NOT BE here" on miscompilation. The behavior is same with other targets as well. We have checked it with latest X86 and Aarch64 targets. gcc t1.c t2.c -O2 -m64 -lm