https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110281
--- Comment #7 from CTC <19373742 at buaa dot edu.cn> --- (In reply to Jakub Jelinek from comment #6) > That requires detailed analysis nobody performed yet. csmith is known to > generate invalid programs sometimes, especially with some options, and only > such analysis can give definite answers. Though, two independent compilers > behaving the same and -fno-strict-aliasing option making it go away is a > strong indication it could very well be a bug in the generated testcase. Thanks very much for your explanation!