gcc/testsuite/gcc.dg/cpp/warn-traditional.c

   1 // { dg-do compile }
   2 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Wtraditional -Wno-deprecated -Wno-long-long" }
   3
   4 #assert x(x)         // { dg-warning "suggest hiding #assert from traditional C with an indented # .-Wtraditional." }
   5
   6  #define X X         // { dg-warning "traditional C ignores #define with the # indented .-Wtraditional." }
   7
   8 #if 0
   9 #elif 1              // { dg-warning "suggest not using #elif in traditional C .-Wtraditional." }
  10 #endif
  11
  12 #define f(X) X
  13 int f;               // { dg-warning "function-like macro \"f\" must be used with arguments in traditional C .-Wtraditional." }
  14
  15 #if 0U               // { dg-warning "traditional C rejects the \"U\" suffix .-Wtraditional." }
  16 #endif
  17
  18 #if +1               // { dg-warning " traditional C rejects the unary plus operator .-Wtraditional." }
  19 #endif
  20
  21 char *x = "\x0";     // { dg-warning "the meaning of '.x' is different in traditional C .-Wtraditional." }
  22 char *y = "\a";      // { dg-warning "the meaning of '.a' is different in traditional C .-Wtraditional." }
  23 char *z = "\u0F43";  // { dg-warning "the meaning of '.u' is different in traditional C .-Wtraditional." }