test/Preprocessor/pr19649-unsigned-wchar_t.c - third_party/swift-clang - Git at Google

 // RUN: %clang_cc1 -triple i386-pc-cygwin -E -x c %s
 // RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -E -fshort-wchar -x c %s

 #if (L'\0' - 1 < 0)
 # error "Unexpected expression evaluation result"
 #endif
	// RUN: %clang_cc1 -triple i386-pc-cygwin -E -x c %s
	// RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -E -fshort-wchar -x c %s

	#if (L'\0' - 1 < 0)
	# error "Unexpected expression evaluation result"
	#endif