modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/pr39999.c (about)

     1  void foo(void *);
     2  void
     3  MMAPGCD (int *A1, int *A2)
     4  {
     5    int *t;
     6  
     7    do
     8      {
     9        t = A1;
    10        A1 = A2;
    11        A2 = t;
    12      }
    13    while (A2[-1]);
    14  
    15    foo (A1-1);
    16    foo (A2-1);
    17  }
    18