| // PR c++/24745 : warnings for NULL constant. |
| // { dg-do compile } |
| // { dg-options "-Wpointer-arith -Wconversion " } |
| |
| #include <cstddef> |
| |
| int foo (void) |
| { |
| if (NULL == 1) return -1; // { dg-warning "NULL used in arithmetic" } |
| if (NULL > NULL) return -1; // { dg-warning "NULL used in arithmetic" } |
| if (NULL < NULL) return -1; // { dg-warning "NULL used in arithmetic" } |
| if (NULL >= 0) return -1; // { dg-warning "NULL used in arithmetic" } |
| if (NULL <= 0) return -1; // { dg-warning "NULL used in arithmetic" } |
| return 0; |
| } |
| |
| int bar (void) |
| { |
| if (NULL) return -1; |
| if (!NULL) return -1; |
| if (!NULL == 1) return -1; |
| if (NULL || NULL) return -1; |
| if (!NULL && NULL) return -1; |
| if (NULL == NULL) return -1; |
| if (NULL != NULL) return -1; |
| if (NULL == 0) return -1; |
| if (NULL != 0) return -1; |
| return 0; |
| } |
