[Bug c/59668] extraneous error messages at -O1, -O2 and -O3 for valid code with string library functions

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59668

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Zhendong Su from comment #5)
> BTW, is strcmp the only one like this, or there are others?

Almost (if not all) all standard C functions are like this.