https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109378
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |*-linux-gnu --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to g.peterhoff from comment #2) > But this is of no use if I want to compile something "normally" without > compiler specific options. Note some libc implementations don't implement setting errno on math functions (e.g. Darwin) and for those targets, -fno-math-errno is already the default. So if you don't need to check errno, then you can use -fno-math-errno. C/C++ allows for an implementation to set errno on an error for math functions even. So this is more about you wanting something different from what the implementation does ...