| // RUN: %clang_analyze_cc1 %s \ |
| // RUN: -analyzer-checker=core \ |
| // RUN: -analyzer-checker=debug.ExprInspection \ |
| // RUN: -analyzer-config eagerly-assume=false \ |
| // RUN: -verify |
| |
| void clang_analyzer_warnIfReached(); |
| void clang_analyzer_eval(); |
| |
| void test_simplification_to_concrete_int_infeasible(int b, int c) { |
| if (c + b != 0) // c + b == 0 |
| return; |
| if (b != 1) // b == 1 --> c + 1 == 0 |
| return; |
| if (c != 1) // c == 1 --> 1 + 1 == 0 contradiction |
| return; |
| clang_analyzer_warnIfReached(); // no-warning |
| |
| // Keep the symbols and the constraints! alive. |
| (void)(b * c); |
| return; |
| } |
| |
| void test_simplification_to_concrete_int_feasible(int b, int c) { |
| if (c + b != 0) |
| return; |
| // c + b == 0 |
| if (b != 1) |
| return; |
| // b == 1 --> c + 1 == 0 |
| if (c != -1) |
| return; |
| // c == -1 --> -1 + 1 == 0 OK |
| clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}} |
| clang_analyzer_eval(c == -1); // expected-warning{{TRUE}} |
| |
| // Keep the symbols and the constraints! alive. |
| (void)(b * c); |
| return; |
| } |