1 /* PR c/65179 */
2 /* { dg-do compile } */
3 /* { dg-options "-O -Wextra -Wno-shift-negative-value" } */
4 /* { dg-additional-options "-std=c++11" { target c++ } } */
5 
6 enum E {
7   A = 0 << 1,
8   B = 1 << 1,
9   C = -1 << 1,
10   /* { dg-error "not an integer constant" "no constant" { target c++ } .-1 } */
11   /* { dg-error "left operand of shift expression" "shift" { target c++ } .-2 } */
12   D = 0 >> 1,
13   E = 1 >> 1,
14   F = -1 >> 1
15 };
16 
17 int
18 left (int x)
19 {
20   /* Warn for LSHIFT_EXPR.  */
21   const int z = 0;
22   const int o = 1;
23   const int m = -1;
24   int r = 0;
25   r += z << x;
26   r += o << x;
27   r += m << x; /* { dg-bogus "left shift of negative value" } */
28   r += 0 << x;
29   r += 1 << x;
30   r += -1 << x; /* { dg-bogus "left shift of negative value" } */
31   r += -1U << x;
32   return r;
33 }
34 
35 int
36 right (int x)
37 {
38   /* Shouldn't warn for RSHIFT_EXPR.  */
39   const int z = 0;
40   const int o = 1;
41   const int m = -1;
42   int r = 0;
43   r += z >> x;
44   r += o >> x;
45   r += m >> x;
46   r += 0 >> x;
47   r += 1 >> x;
48   r += -1 >> x;
49   r += -1U >> x;
50   return r;
51 }
52