[Bug c/34841] 'make check' of libsndfile-1.0.17 fails with gcc-4.2.2 -O2 optimization, OK with -O1 one

[pinskia at gcc dot gnu dot org]

------- Comment #7 from pinskia at gcc dot gnu dot org  2008-01-18 01:46 -------
(In reply to comment #6)
> Did you mean CFLAGS='-O2 -fwrapv -Wstrict-overflow' or, rather,
> CFLAGS='-O2 -Wstrict-overflow' ?

The latter, you will only get the warning if -fwrapv is off as it warns when
the optimizers are optimizing based on the undefinedness.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34841