modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/pr22061-4.c (about)

     1  /* { dg-skip-if "requires alloca" { ! alloca } { "-O0" } { "" } } */
     2  void
     3  bar (int N)
     4  {
     5    void foo (int a[2][N++]) {}
     6    int a[2][N];
     7    foo (a);
     8    int b[2][N];
     9    foo (b);
    10    if (sizeof (a) != sizeof (int) * 2 * 1)
    11      abort ();
    12    if (sizeof (b) != sizeof (int) * 2 * 2)
    13      abort ();
    14    if (N != 3)
    15      abort ();
    16  }
    17  
    18  int
    19  main (void)
    20  {
    21    bar (1);
    22    exit (0);
    23  }