gcc-4.9/gcc/testsuite/gcc.dg/20011015-1.c


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/* { dg-do compile } */
/* { dg-options "-O3 -std=gnu99" } */

char foo (char *x)
{
  return *x;
}

void bar (char *x)
{
  void *arr[foo (x)] __attribute__((unused));
}

void baz (char *x)
{
  bar (x);
}