1// Without PCH
2// RUN: %clang_cc1 -fsyntax-only -verify %s -include %s -include %s
3
4// With PCH
5// RUN: %clang_cc1 -fsyntax-only -verify %s -chain-include %s -chain-include %s
6
7#ifndef HEADER1
8#define HEADER1
9
10@class I;
11
12#elif !defined(HEADER2)
13#define HEADER2
14
15@interface I
16@end
17
18#else
19
20typedef int I; // expected-error {{redefinition}}
21               // expected-note@15 {{previous}}
22
23#endif
24