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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [warn-addr-cmp.c] - Blame information for rev 826

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Line No. Rev Author Line
1 298 jeremybenn 
/* { dg-do compile } */
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/* { dg-require-weak "" } */
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/* { dg-options "-Waddress" } */
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/* Warning when addr convert to bool always gives known result.
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   Ada/Pascal programmers sometimes write 0-param functions without
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   (), and might as well warn on variables, too.  */
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int func (void);
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extern int var;
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int weak_func (void) __attribute__ ((weak));
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extern int weak_var __attribute__ ((weak));
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int
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test_func_cmp (void)
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{
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  if (func)      /* { dg-warning "the address of 'func'" } */
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    return 1;
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  if (!func)     /* { dg-warning "the address of 'func'" } */
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    return 1;
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  if (&var)     /* { dg-warning "the address of 'var'" } */
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    return 1;
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  if (!&var)     /* { dg-warning "the address of 'var'" } */
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    return 1;
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  if (weak_func)
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    return 1;
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  if (!weak_func)
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    return 1;
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  if (&weak_var)
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    return 1;
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  if (!&weak_var)
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    return 1;
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  return 0;
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}
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/* Test equality with 0 on the right hand side.  */
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int
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test_func_cmp_rhs_zero (void)
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{
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  if (func == 0)     /* { dg-warning "the address of 'func'" } */
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    return 1;
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  if (func != 0)     /* { dg-warning "the address of 'func'" } */
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    return 1;
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  if (&var == 0)     /* { dg-warning "the address of 'var'" } */
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    return 1;
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  if (&var != 0)     /* { dg-warning "the address of 'var'" } */
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    return 1;
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  if (weak_func == 0)
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    return 1;
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  if (weak_func != 0)
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    return 1;
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  if (&weak_var == 0)
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    return 1;
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  if (&weak_var != 0)
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    return 1;
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  return 0;
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}
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/* Test equality with 0 on the left hand side.  */
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int
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test_func_cmp_lhs_zero (void)
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{
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  if (0 == func)     /* { dg-warning "the address of 'func'" } */
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    return 1;
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  if (0 != func)     /* { dg-warning "the address of 'func'" } */
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    return 1;
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  if (0 == &var)     /* { dg-warning "the address of 'var'" } */
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    return 1;
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  if (0 != &var)     /* { dg-warning "the address of 'var'" } */
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    return 1;
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  if (0 == weak_func)
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    return 1;
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  if (0 != weak_func)
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    return 1;
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  if (0 == &weak_var)
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    return 1;
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  if (0 != &weak_var)
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    return 1;
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  return 0;
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}

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