gcc/testsuite/gcc.dg/no-math-errno-4.c

   1 /* Test __NO_MATH_ERRNO__ is defined and undefined by pragmas.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-fmath-errno" } */
   4
   5 #ifdef __NO_MATH_ERRNO__
   6 #error "__NO_MATH_ERRNO__ defined"
   7 #endif
   8
   9 #pragma GCC optimize "-fno-math-errno"
  10 #ifndef __NO_MATH_ERRNO__
  11 #error "__NO_MATH_ERRNO__ not defined"
  12 #endif
  13
  14 #pragma GCC optimize "-fmath-errno"
  15 #ifdef __NO_MATH_ERRNO__
  16 #error "__NO_MATH_ERRNO__ defined"
  17 #endif