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

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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 %s -E | grep 'V);'
// RUN: %clang_cc1 %s -E | grep 'W, 1, 2);'
// RUN: %clang_cc1 %s -E | grep 'X, 1, 2);'
Fix whitespace handling in ## operator In x ## y, where x and y are regular tokens, whitespace between x and ## is ignored, and whitespace between ## and y is also ignored. When either x or y is a function argument, whitespace was preserved, but it should not be. This patch removes the checks for whitespace before ## and before y, and in the special case where x is an empty macro argument and y is a regular token, actively removes whitespace before y. One existing test is affected by that change, but as clang's output now matches the standard's requirements and that of GCC, I've tweaked the testcase. Patch by Harald van Dijk! llvm-svn: 200785
2014-02-05 03:18:28 +08:00
// RUN: %clang_cc1 %s -E | grep 'Y,);'
// RUN: %clang_cc1 %s -E | grep 'Z,);'
Fix a bug where we would incorrectly emit a "cannot paste" error message when handling the GNU ", ## __VA_ARGS__" extension. While I'm at it, flag uses of this as extensions. llvm-svn: 46503
2008-01-29 15:54:23 +08:00
#define debug(format, ...) format, ## __VA_ARGS__)
debug(V);
debug(W, 1, 2);
debug(X, 1, 2 );
debug(Y, );
debug(Z,);