| // RUN: %clang_cc1 -verify -fsyntax-only -Wshadow -Wold-style-cast %s |
| |
| // Test that macro expansions from system headers don't trigger 'syntactic' |
| // warnings that are not actionable. |
| |
| #ifdef IS_SYSHEADER |
| #pragma clang system_header |
| |
| #define SANITY(a) (a / 0) |
| |
| #define SHADOW(a) __extension__({ int v = a; v; }) |
| |
| #define OLD_STYLE_CAST(a) ((int) (a)) |
| |
| #else |
| |
| #define IS_SYSHEADER |
| #include __FILE__ |
| |
| void testSanity() { |
| // Validate that the test is set up correctly |
| int i = SANITY(0); // expected-warning {{division by zero is undefined}} |
| } |
| |
| void PR16093() { |
| // no -Wshadow in system macro expansion |
| int i = SHADOW(SHADOW(1)); |
| } |
| |
| void PR18147() { |
| // no -Wold_style_cast in system macro expansion |
| int i = OLD_STYLE_CAST(0); |
| } |
| |
| #endif |
