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| Line No. |
Rev |
Author |
Line |
| 1 |
689 |
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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| 9 |
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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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| 24 |
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if (weak_func)
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return 1;
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if (!weak_func)
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| 27 |
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return 1;
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| 28 |
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if (&weak_var)
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| 29 |
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return 1;
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| 30 |
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if (!&weak_var)
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| 31 |
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return 1;
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| 32 |
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return 0;
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}
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| 35 |
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/* Test equality with 0 on the right hand side. */
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int
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| 37 |
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test_func_cmp_rhs_zero (void)
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| 38 |
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{
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| 39 |
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if (func == 0) /* { dg-warning "the comparison will always evaluate as 'false'" } */
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| 40 |
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return 1;
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| 41 |
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if (func != 0) /* { dg-warning "the comparison will always evaluate as 'true'" } */
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return 1;
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| 43 |
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if (&var == 0) /* { dg-warning "the comparison will always evaluate as 'false'" } */
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return 1;
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| 45 |
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if (&var != 0) /* { dg-warning "the comparison will always evaluate as 'true'" } */
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return 1;
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| 47 |
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if (weak_func == 0)
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return 1;
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| 49 |
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if (weak_func != 0)
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| 50 |
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return 1;
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| 51 |
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if (&weak_var == 0)
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| 52 |
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return 1;
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| 53 |
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if (&weak_var != 0)
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| 54 |
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return 1;
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| 55 |
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return 0;
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| 56 |
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}
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| 57 |
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| 58 |
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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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| 61 |
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{
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| 62 |
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if (0 == func) /* { dg-warning "the comparison will always evaluate as 'false'" } */
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return 1;
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| 64 |
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if (0 != func) /* { dg-warning "the comparison will always evaluate as 'true'" } */
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return 1;
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if (0 == &var) /* { dg-warning "the comparison will always evaluate as 'false'" } */
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return 1;
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if (0 != &var) /* { dg-warning "the comparison will always evaluate as 'true'" } */
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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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| 74 |
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if (0 == &weak_var)
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return 1;
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| 76 |
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if (0 != &weak_var)
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return 1;
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| 78 |
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return 0;
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| 79 |
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}
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