empty-with-headers.c revision d096acc220fc72ec73c2abf21d6c251d867e950d 
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
14typedef 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}}
28