1// Test this without pch.
2// RUN: %clang_cc1 %s -include %s -verify -fsyntax-only -Wno-sign-compare -Wtautological-compare
3
4// Test with pch.
5// RUN: %clang_cc1 %s -emit-pch -o %t -Wsign-compare -Wtautological-compare
6// RUN: %clang_cc1 %s -include-pch %t -verify -fsyntax-only -Wno-sign-compare -Wtautological-compare
7
8// expected-no-diagnostics
9
10// This tests that diagnostic mappings from PCH are propagated for #pragma
11// diagnostics but not for command-line flags.
12
13#ifndef HEADER
14#define HEADER
15
16#pragma clang diagnostic ignored "-Wtautological-compare"
17
18#else
19
20int f() {
21  int a;
22  int b = a==a;
23  unsigned x;
24  signed y;
25  return x == y;
26}
27
28#endif
29