gcc/testsuite/gcc.dg/pr99122-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-std=gnu17 -O2 -g -w" } */
   3 /* { dg-require-effective-target alloca } */
   4
   5 static int foo ();
   6
   7 int
   8 bar (int n)
   9 {
  10   struct S { char a[n]; } x;
  11   __builtin_memset (x.a, 0, n);
  12   return foo (n, x);
  13 }
  14
  15 static inline int
  16 foo (int n, struct T { char a[n]; } b)
  17 {
  18   int r = 0, i;
  19   for (i = 0; i < n; i++)
  20     r += b.a[i];
  21   return r;
  22 }