------- Comment #6 from fxcoudert at gcc dot gnu dot org 2009-12-29 21:51 ------- Confirming this as generic, non Darwin-specific bug. On i686-linux with current trunk:
$ cat a.c #include <stdio.h> #include <math.h> #include <fenv.h> main() { unsigned flags; feclearexcept(FE_ALL_EXCEPT); (void)acos(1.1); flags = fetestexcept(FE_ALL_EXCEPT); printf("(void)acos( %e ) gives flags 0x%8x\n", 1.1, flags & FE_ALL_EXCEPT); } $ gcc a.c -ftrapping-math -O0 -fno-math-errno -lm && ./a.out (void)acos( 1.100000e+00 ) gives flags 0x 0 -- fxcoudert at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- GCC target triplet|*-*-darwin* | Last reconfirmed|2007-01-24 10:25:28 |2009-12-29 21:51:37 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30568