[Bug c/40179] Incorrectly use Built-in function to replace the normal function with flag -O1

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2009-05-18 00:36 -------
Hmm, The warning is a bit weird because the return type of strlen is size_t
which is unsigned int on i686-linux-gnu and unsigned long on x86_64-linux-gnu
but we ignore the signness for some reason.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40179