gcc/testsuite/gcc.dg/bconstp-3.c

   1 /* As bconstp-1.c, but with the __builtin_constant_p calls inside
   2    __builtin_choose_expr.  */
   3 /* { dg-do compile } */
   4
   5 /* This test checks that builtin_constant_p can be used safely in
   6    initializers for static data.  The macro X() defined below should
   7    be an acceptable initializer expression no matter how complex its
   8    argument is.  */
   9
  10 extern int a;
  11 extern int b;
  12
  13 extern int foo(void);
  14 extern int bar(void);
  15
  16 #define X(exp) (__builtin_choose_expr(1, __builtin_constant_p(exp), 1) ? (exp) : -1)
  17
  18 const short tests[] = {
  19   X(0),
  20   X(a),
  21   X(0 && a),
  22   X(a && b),
  23   X(foo()),
  24   X(0 && foo()),
  25   X(a && foo()),
  26   X(foo() && bar())
  27 };