gcc/testsuite/gcc.dg/Wstring-literal-comparison-2.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

/* PR c/7776 */
/* { dg-do compile } */
/* { dg-options "-Wall" } */

int test1(char *ptr)
{
  return ptr == "foo";  /* { dg-warning "comparison with string" } */
}

int test2()
{
  return "foo" != (const char*)0;
}

int test3()
{
  return "foo" == (const char*)0;
}

int test4()
{
  return (const char*)0 != "foo";
}

int test5()
{
  return (const char*)0 == "foo";
}