[Bug c/60170] No -Wtype-limits warning with -O1

[egallager at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60170

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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   Last reconfirmed|2014-02-19 00:00:00         |2017-7-27
                 CC|                            |egallager at gcc dot gnu.org

--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
It's not just -O1 that misses the warning. I tested all optimization levels,
and gcc only warned with -O0. The warning disappeared with -O1, -O2, -O3, -Og,
-Os, and -Ofast.