gcc/testsuite/gcc.dg/cpp/paste5.c

   1 /* Regression test for bug in convoluted situation involving token paste
   2    plus function-like macros used outside function context.  It may be
   3    easier to understand if you mentally replace 'struct' with 'A'
   4    throughout this file; 'struct' is used only to get the code to compile
   5    when preprocessed correctly.
   6
   7    The original problem was seen in the Linux kernel and reported by
   8    Jakub Jelinek <jakub@redhat.com>; this test is synthetic.  */
   9
  10 /* { dg-do compile } */
  11
  12 #define glue(a,b) a##b
  13 #define struct(x) B(x)
  14 #define E(x) struct x
  15 #define FG (22)
  16
  17 extern void B(int);
  18
  19 void foo(void)
  20 {
  21   E(glue(F,*)) dummy;  /* { dg-warning "valid preprocessing token" } */
  22
  23   E(glue(F,G)) ;
  24 }