https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64101
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|NEW |RESOLVED
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Recent glibc documents
These functions do not set errno.
(and in fact they do not). GCC does not elide the erf() call with -O0 which is
how you can verify your erf implementation sets or does not set errno, at -O1
GCC elides the erf call as the result is unused.
According to Joseph glibcs behavior is correct and so is then GCCs.
