hanchenye-llvm-project/clang/test/Preprocessor/macro_fn_varargs_named.c

// RUN: %clang_cc1 -E %s | grep '^a: x$'
// RUN: %clang_cc1 -E %s | grep '^b: x y, z,h$'
// RUN: %clang_cc1 -E %s | grep '^c: foo(x)$'

#define A(b, c...) b c
a: A(x)
b: A(x, y, z,h)

#define B(b, c...) foo(b, ## c)
c: B(x)
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: x$'`
			`// RUN: %clang_cc1 -E %s \| grep '^b: x y, z,h$'`
			`// RUN: %clang_cc1 -E %s \| grep '^c: foo(x)$'`
new testcase llvm-svn: 38768 2006-07-29 09:24:46 +08:00
			`#define A(b, c...) b c`
			`a: A(x)`
			`b: A(x, y, z,h)`

The awesome GNU "comma elision extension" works with both the standard __VA_ARGS__ syntax as well as with the amazingly awesome GNU "named variadic macro" extension. Allow it with the GNU syntax as well. llvm-svn: 50843 2008-05-08 13:10:33 +08:00			`#define B(b, c...) foo(b, ## c)`
			`c: B(x)`