| // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output text \ |
| // RUN: -verify %s |
| |
| void test_no_overflow_note(int a, int b) |
| { |
| int res; |
| |
| if (__builtin_add_overflow(a, b, &res)) // expected-note {{Assuming no overflow}} |
| // expected-note@-1 {{Taking false branch}} |
| return; |
| |
| if (res) { // expected-note {{Assuming 'res' is not equal to 0}} |
| // expected-note@-1 {{Taking true branch}} |
| int *ptr = 0; // expected-note {{'ptr' initialized to a null pointer value}} |
| int var = *(int *) ptr; //expected-warning {{Dereference of null pointer}} |
| //expected-note@-1 {{Dereference of null pointer}} |
| } |
| } |
| |
| void test_overflow_note(int a, int b) |
| { |
| int res; |
| |
| if (__builtin_add_overflow(a, b, &res)) { // expected-note {{Assuming overflow}} |
| // expected-note@-1 {{Taking true branch}} |
| if (res) { // expected-note {{Assuming 'res' is not equal to 0}} |
| // expected-note@-1 {{Taking true branch}} |
| int *ptr = 0; // expected-note {{'ptr' initialized to a null pointer value}} |
| int var = *(int *) ptr; //expected-warning {{Dereference of null pointer}} |
| //expected-note@-1 {{Dereference of null pointer}} |
| } |
| return; |
| } |
| } |
