clang/test/PCH/empty-with-headers.c

   1 // RUN: %clang_cc1 -fsyntax-only -std=c99 -pedantic-errors %s
   2 // RUN: %clang_cc1 -fsyntax-only -std=c99 -emit-pch -o %t %s
   3 // RUN: %clang_cc1 -fsyntax-only -std=c99 -pedantic-errors -include-pch %t %s
   4
   5 // RUN: %clang_cc1 -fsyntax-only -std=c99 -pedantic-errors -DINCLUDED %s -verify
   6 // This last one should warn for -Wempty-translation-unit (C99 6.9p1).
   7
   8 #if defined(INCLUDED)
   9
  10 // empty except for the prefix header
  11
  12 #elif defined(HEADER)
  13
  14 typedef int my_int;
  15 #define INCLUDED
  16
  17 #else
  18
  19 #define HEADER
  20 #include "empty-with-headers.c"
  21 // empty except for the header
  22
  23 #endif
  24
  25 // This should only fire if the header is not included,
  26 // either explicitly or as a prefix header.
  27 // expected-error{{ISO C requires a translation unit to contain at least one declaration}}