modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20020219-1.c (about)

     1  /* PR c/4308
     2     This testcase failed because 0x8000000000000000 >> 0
     3     was incorrectly folded into 0xffffffff00000000.  */
     4  
     5  extern void abort (void);
     6  extern void exit (int);
     7  
     8  long long foo (void)
     9  {
    10    long long C = 1ULL << 63, X;
    11    int Y = 32;
    12    X = C >> (Y & 31);
    13    return X;
    14  }
    15  
    16  int main (void)
    17  {
    18    if (foo () != 1ULL << 63)
    19      abort ();
    20    exit (0);
    21  }