| /* { dg-do compile } */ |
| /* { dg-require-weak "" } */ |
| /* { dg-options "-Waddress" } */ |
| /* Warning when addr convert to bool always gives known result. |
| Ada/Pascal programmers sometimes write 0-param functions without |
| (), and might as well warn on variables, too. */ |
| |
| int func (void); |
| extern int var; |
| int weak_func (void) __attribute__ ((weak)); |
| extern int weak_var __attribute__ ((weak)); |
| |
| int |
| test_func_cmp (void) |
| { |
| if (func) /* { dg-warning "the address of 'func'" } */ |
| return 1; |
| if (!func) /* { dg-warning "the address of 'func'" } */ |
| return 1; |
| if (&var) /* { dg-warning "the address of 'var'" } */ |
| return 1; |
| if (!&var) /* { dg-warning "the address of 'var'" } */ |
| return 1; |
| if (weak_func) |
| return 1; |
| if (!weak_func) |
| return 1; |
| if (&weak_var) |
| return 1; |
| if (!&weak_var) |
| return 1; |
| return 0; |
| } |
| |
| /* Test equality with 0 on the right hand side. */ |
| int |
| test_func_cmp_rhs_zero (void) |
| { |
| if (func == 0) /* { dg-warning "the address of 'func'" } */ |
| return 1; |
| if (func != 0) /* { dg-warning "the address of 'func'" } */ |
| return 1; |
| if (&var == 0) /* { dg-warning "the address of 'var'" } */ |
| return 1; |
| if (&var != 0) /* { dg-warning "the address of 'var'" } */ |
| return 1; |
| if (weak_func == 0) |
| return 1; |
| if (weak_func != 0) |
| return 1; |
| if (&weak_var == 0) |
| return 1; |
| if (&weak_var != 0) |
| return 1; |
| return 0; |
| } |
| |
| /* Test equality with 0 on the left hand side. */ |
| int |
| test_func_cmp_lhs_zero (void) |
| { |
| if (0 == func) /* { dg-warning "the address of 'func'" } */ |
| return 1; |
| if (0 != func) /* { dg-warning "the address of 'func'" } */ |
| return 1; |
| if (0 == &var) /* { dg-warning "the address of 'var'" } */ |
| return 1; |
| if (0 != &var) /* { dg-warning "the address of 'var'" } */ |
| return 1; |
| if (0 == weak_func) |
| return 1; |
| if (0 != weak_func) |
| return 1; |
| if (0 == &weak_var) |
| return 1; |
| if (0 != &weak_var) |
| return 1; |
| return 0; |
| } |