gcc/testsuite/c-c++-common/Wshift-overflow-6.c

   1 /* PR c++/55095 */
   2 /* { dg-do compile { target int32 } } */
   3 /* { dg-options "-Wshift-overflow=1" } */
   4
   5 int i00 = 0b1 << 31;
   6 int i01 = 0b10 << 30;
   7 int i02 = 0b100 << 29;
   8 int i03 = 0b1000 << 28;
   9 int i04 = 0b10000 << 27;
  10 int i05 = 0b100000 << 26;
  11 int i06 = 0b1000000 << 25;
  12 int i07 = 0b10000000 << 24;
  13 int i08 = 0b100000000 << 23;
  14 int i09 = 0b1000000000 << 22;
  15 int i10 = 0b10000000000 << 21;
  16 int i11 = 0b100000000000 << 20;
  17 int i12 = 0b1000000000000 << 19;
  18 int i13 = 0b10000000000000 << 18;
  19 int i14 = 0b100000000000000 << 17;
  20 int i15 = 0b1000000000000000 << 16;
  21 int i16 = 0b10000000000000000 << 15;
  22 int i17 = 0b100000000000000000 << 14;
  23 int i18 = 0b1000000000000000000 << 13;
  24 int i19 = 0b10000000000000000000 << 12;
  25 int i20 = 0b100000000000000000000 << 11;
  26 int i21 = 0b1000000000000000000000 << 10;
  27 int i22 = 0b10000000000000000000000 << 9;
  28 int i23 = 0b100000000000000000000000 << 8;
  29 int i24 = 0b1000000000000000000000000 << 7;
  30 int i25 = 0b10000000000000000000000000 << 6;
  31 int i26 = 0b100000000000000000000000000 << 5;
  32 int i27 = 0b1000000000000000000000000000 << 4;
  33 int i28 = 0b10000000000000000000000000000 << 3;
  34 int i29 = 0b100000000000000000000000000000 << 2;
  35 int i30 = 0b1000000000000000000000000000000 << 1;
  36 int i31 = (int) 0b10000000000000000000000000000000u << 1; /* { dg-warning "requires 33 bits to represent" "" { target { c || c++17_down } } } */