Subversion Repositories scarts

/* Copyright (C) 2000 Free Software Foundation, Inc.  */
 
/* { dg-do preprocess } */
 
/* Tests behavior of the defined operator.  */
 
/*  Source: Neil Booth, 29 Oct 2000, Zack Weinberg 11 Dec 2000.  */
 
#define defined			/* { dg-error "defined" } */
 
/* No diagnostics, though you could argue there should be.  */
#if defined defined
#error defined is defined!
#endif
 
#define is_Z_defined defined Z
 
#if defined Z
#error Z is not defined
#endif
 
/* The behavior of "defined" when it comes from a macro expansion is
   now documented.  */
#if is_Z_defined
#error Macro expanding into defined operator test 1
#endif
 
#define Z
 
#if !defined Z
#error Z is defined
#endif
 
#if !is_Z_defined
#error Macro expanding into defined operator test 2
#endif
 
#undef is_Z_defined
#undef Z
 
/* Do all the tests over again with the () form of defined.  */
 
/* No diagnostics, though you could argue there should be.  */
#if defined(defined)
#error defined is defined!
#endif
 
#define is_Z_defined defined ( Z )
 
#if defined(Z)
#error Z is not defined
#endif
 
/* The behavior of "defined" when it comes from a macro expansion is
   now documented.  */
#if is_Z_defined
#error Macro expanding into defined operator test 1
#endif
 
#define Z
 
#if !defined(Z)
#error Z is defined
#endif
 
#if !is_Z_defined
#error Macro expanding into defined operator test 2
#endif
 
/* Use of defined in different contexts.  */
 
#define bad1 defined
#if !bad1 Z			/* { dg-warning "may not be portable" } */
#error Z is defined
#endif 
 
#if !bad1 (Z)			/* { dg-warning "may not be portable" } */
#error Z is defined
#endif 
 
#define bad2 defined (Z
#if !bad2)			/* { dg-warning "may not be portable" } */
#error Z is defined
#endif