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// RUN: rm -rf %t.mcp
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps %s -emit-pch -o %t1.pch -fmodules-cache-path=%t.mcp -I %S/Inputs/redecls
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps %s -emit-pch -o %t2.pch -include-pch %t1.pch -fmodules-cache-path=%t.mcp -I %S/Inputs/redecls
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps %s -fsyntax-only -include-pch %t2.pch -I %S/Inputs/redecls -fmodules-cache-path=%t.mcp -verify
#ifndef HEADER1
#define HEADER1
@import a;
#elif !defined(HEADER2)
#define HEADER2
@class AA;
@import b;
#else
// rdar://13712705
@interface SS : AA
@end
#warning parsed this
#endif
// expected-warning@-2{{parsed this}}