gcc/testsuite/gcc.dg/c99-const-expr-13.c

   1 /* Test for constant expressions: VLA size constraints with
   2    -frounding-math.  */
   3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=iso9899:1999 -pedantic-errors -frounding-math" } */
   6
   7 void
   8 f (void)
   9 {
  10   /* With -frounding-math, presume that floating-point expressions
  11      that may depend on the rounding mode do not count as arithmetic
  12      constant expressions, and so arrays involving such expressions in
  13      their sizes do not have the size checked for being negative.  */
  14   int a1[(int)(-5.0/3.0)];
  15 }