[Bug c/79479] -Woverflow false alarm in unreachable expression
msebor at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Feb 13 18:21:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79479
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |msebor at gcc dot gnu.org
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
I think a similar issue was discussed in the past. The warnings are justified
because implementations are allowed (even encouraged) to evaluate constant
expressions during translation rather than runtime. As a result, the
translation of a program that contains an overflowing constant expression has
undefined behavior.
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