gcc/testsuite/gcc.dg/bconstp-1.c

   1 /* { dg-do compile } */
   2
   3 /* This test checks that builtin_constant_p can be used safely in
   4    initializers for static data.  The macro X() defined below should
   5    be an acceptable initializer expression no matter how complex its
   6    argument is.  */
   7
   8 extern int a;
   9 extern int b;
  10
  11 extern int foo(void);
  12 extern int bar(void);
  13
  14 #define X(exp) (__builtin_constant_p(exp) ? (exp) : -1)
  15
  16 const short tests[] = {
  17   X(0),
  18   X(a),
  19   X(0 && a),
  20   X(a && b),
  21   X(foo()),
  22   X(0 && foo()),
  23   X(a && foo()),
  24   X(foo() && bar())
  25 };