29 lines · c
1// Test this without pch.2// RUN: %clang_cc1 %s -include %s -verify -fsyntax-only -Wno-sign-compare -Wtautological-compare3 4// Test with pch.5// RUN: %clang_cc1 %s -emit-pch -o %t -Wsign-compare -Wtautological-compare6// RUN: %clang_cc1 %s -include-pch %t -verify -fsyntax-only -Wno-sign-compare -Wtautological-compare7 8// expected-no-diagnostics9 10// This tests that diagnostic mappings from PCH are propagated for #pragma11// diagnostics but not for command-line flags.12 13#ifndef HEADER14#define HEADER15 16#pragma clang diagnostic ignored "-Wtautological-compare"17 18#else19 20int f(void) {21 int a;22 int b = a==a;23 unsigned x;24 signed y;25 return x == y;26}27 28#endif29