llvm-project/clang/test/Preprocessor/macro_paste_empty.c

// RUN: %clang_cc1 -E %s | grep 'a:Y'
// RUN: %clang_cc1 -E %s | grep 'b:Y'
// RUN: %clang_cc1 -E %s | grep 'c:YY'

#define FOO(X) X ## Y
a:FOO()

#define FOO2(X) Y ## X
b:FOO2()

#define FOO3(X) X ## Y ## X ## Y ## X ## X
c:FOO3()
Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'. - This is designed to make it obvious that %clang_cc1 is a "test variable" which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it can be useful to redefine what gets run as 'clang -cc1' (for example, to set a default target). llvm-svn: 91446 2009-12-16 04:14:24 +08:00			`// RUN: %clang_cc1 -E %s \| grep 'a:Y'`
			`// RUN: %clang_cc1 -E %s \| grep 'b:Y'`
			`// RUN: %clang_cc1 -E %s \| grep 'c:YY'`
Add test for pasting empty formals llvm-svn: 38763 2006-07-28 13:13:36 +08:00
			`#define FOO(X) X ## Y`
			`a:FOO()`

			`#define FOO2(X) Y ## X`
			`b:FOO2()`

			`#define FOO3(X) X ## Y ## X ## Y ## X ## X`
			`c:FOO3()`