support/regression/tests/gcc-torture-execute-20020614-1.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

/*
   20020614-1.c from the execute part of the gcc torture suite.
 */

#include <testfwk.h>

#ifdef __SDCC
#pragma std_c99
#endif

/* PR c/6677 */
/* Verify that GCC doesn't perform illegal simplifications
   when folding constants.  */

#include <limits.h>

void testTortureExecute (void)
{
  int i;
  signed char j;
  unsigned char k;

  i = SCHAR_MAX;

  j = ((signed char) (i << 1)) / 2;

  if (j != -1)
    ASSERT (0);

  j = ((signed char) (i * 2)) / 2;

  if (j != -1)
    ASSERT (0);

  i = UCHAR_MAX;

  k = ((unsigned char) (i << 1)) / 2;

  if (k != UCHAR_MAX/2)
    ASSERT (0);

  k = ((unsigned char) (i * 2)) / 2;

  if (k != UCHAR_MAX/2)
    ASSERT (0);

  return;
}