gcc/testsuite/gcc.dg/cpp/Wunused.c

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.  */
   2
   3 /* { dg-do preprocess } */
   4 /* Duplicate command line options should not warn.  */
   5 /* { dg-options "-Wunused-macros -Dfoo -Dfoo" } */
   6
   7 /* Test everything related to -Wunused-macros.
   8
   9    Source: Neil Booth, 23 Jul 2002.  */
  10
  11 #include "Wunused.h"
  12
  13 #define used1                   /* { dg-bogus "used" } */
  14 #define used2                   /* { dg-bogus "used" } */
  15 #define used3                   /* { dg-bogus "used" } */
  16 #define used4 used4             /* { dg-bogus "used" } */
  17
  18 #define unused5                 /* { dg-warning "used" } */
  19 #define unused6                 /* { dg-warning "used" } */
  20 #define unused7()               /* { dg-warning "used" } */
  21
  22 #if defined used1
  23 #endif
  24 #ifdef used2
  25 #endif
  26 #ifndef used3
  27 #endif
  28 used4
  29
  30 unused7                         /* This does not count as a use.  */
  31
  32 #if 0
  33 unused5                         /* This does not count as a use.  */
  34 #endif
  35 #undef unused5
  36
  37 #define unused6
  38 unused6