gcc/testsuite/gcc.dg/vla-15.c

   1 /* Test for VLA size evaluation in sizeof typeof.  */
   2 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   3 /* { dg-do run } */
   4 /* { dg-options "-std=gnu99" } */
   5
   6 #include <stdarg.h>
   7
   8 extern void exit (int);
   9 extern void abort (void);
  10
  11 char a[1];
  12
  13 void
  14 f1 (void)
  15 {
  16   int i = 0;
  17   int j = sizeof (typeof (*(++i, (char (*)[i])a)));
  18   if (i != 1 || j != 1)
  19     abort ();
  20 }
  21
  22 int
  23 main (void)
  24 {
  25   f1 ();
  26   exit (0);
  27 }