test/PCH/rdar8852495.c

   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 // This tests that diagnostic mappings from PCH are propagated for #pragma
   9 // diagnostics but not for command-line flags.
  10
  11 #ifndef HEADER
  12 #define HEADER
  13
  14 #pragma clang diagnostic ignored "-Wtautological-compare"
  15
  16 #else
  17
  18 int f() {
  19   int b = b==b;
  20   unsigned x;
  21   signed y;
  22   return x == y;
  23 }
  24
  25 #endif