gnu/dist/gcc4/gcc/testsuite/gcc.dg/cpp/20000628-1a.h

   1 /* Included from 20000628-1.h.  This header is supposed to be seen
   2    exactly three times.  */
   3
   4 #if !defined A
   5 #define A
   6 int a;
   7 #elif !defined B
   8 #define B
   9 int b;
  10 #elif !defined C
  11 #define C
  12 int c;
  13 #else
  14 #error Included a fourth time
  15 #endif