clang/test/Preprocessor/macro_paste_commaext.c

   1 // RUN: %clang_cc1 %s -E | FileCheck --strict-whitespace --match-full-lines %s
   2
   3 // In the following tests, note that the output is sensitive to the
   4 // whitespace *preceding* the varargs argument, as well as to
   5 // interior whitespace. AFAIK, this is the only case where whitespace
   6 // preceding an argument matters, and might be considered a bug in
   7 // GCC. Nevertheless, since this feature is a GCC extension in the
   8 // first place, we'll follow along.
   9
  10 #define debug(format, ...) format, ## __VA_ARGS__)
  11 // CHECK:V);
  12 debug(V);
  13 // CHECK:W,1, 2);
  14 debug(W,1, 2);
  15 // CHECK:X, 1, 2);
  16 debug(X, 1, 2 );
  17 // CHECK:Y,);
  18 debug(Y, );
  19 // CHECK:Z,);
  20 debug(Z,);