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[Bug sanitizer/66880] 'error: case label does not reduce to an integer constant' with -fsanitize=shift -std=gnu99.
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 16 Jul 2015 07:45:40 +0000
- Subject: [Bug sanitizer/66880] 'error: case label does not reduce to an integer constant' with -fsanitize=shift -std=gnu99.
- Auto-submitted: auto-generated
- References: <bug-66880-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66880
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
It would be better to make the C FE reject this as constant expression which
invokes undefined behavior.
IMHO -fsanitize should never sanitize any constant expression - the FE will
reject non-constant ones anyway.