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
f()20 int f() {
21 int a;
22 int b = a==a;
23 unsigned x;
24 signed y;
25 return x == y;
26 }
27
28 #endif
29