[Bug middle-end/43987] [4.5 regression] type-punning causes broken binaries unless -O0 is used

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2010-05-04 23:08 -------
>What is -fwrapv supposed to do? I

Changes the behavior of signed integer overflow to be defined as wrapping
rather than being undefined.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43987