1// RUN: %clang_cc1 -verify -fsyntax-only -Wshadow -Wold-style-cast %s 2 3// Test that macro expansions from system headers don't trigger 'syntactic' 4// warnings that are not actionable. 5 6#ifdef IS_SYSHEADER 7#pragma clang system_header 8 9#define SANITY(a) (a / 0) 10 11#define SHADOW(a) __extension__({ int v = a; v; }) 12 13#define OLD_STYLE_CAST(a) ((int) (a)) 14 15#else 16 17#define IS_SYSHEADER 18#include __FILE__ 19 20void testSanity() { 21 // Validate that the test is set up correctly 22 int i = SANITY(0); // expected-warning {{division by zero is undefined}} 23} 24 25void PR16093() { 26 // no -Wshadow in system macro expansion 27 int i = SHADOW(SHADOW(1)); 28} 29 30void PR18147() { 31 // no -Wold_style_cast in system macro expansion 32 int i = OLD_STYLE_CAST(0); 33} 34 35#endif 36