[RFA] Suppress warning about redundant decl when first decl is a friend.

[Nick Clifton]

Hi Guys,

  I would like permission to apply the following patch.  It suppresses
  a warning message about a redundant decl, when the first decl is a
  friend.  The message (prior to this patch) could be generated by
  compiling the following test program with -Wredundant-decl enabled:

    class Foo
    {
       friend void bar (Foo);
    public:
    };

    extern void bar (Foo);

Cheers
        Nick


2001-05-14  Nick Clifton  <nickc@cambridge.redhat.com>

	* decl.c (duplicate_decls): Suppress warning about duplicate
        decls if the first decl is a friend.

Index: gcc/cp/decl.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/cp/decl.c,v
retrieving revision 1.783
diff -p -r1.783 decl.c
*** decl.c	2001/05/12 10:37:48	1.783
--- decl.c	2001/05/14 09:43:42
*************** duplicate_decls (newdecl, olddecl)
*** 3457,3463 ****
  	  /* Don't warn about extern decl followed by definition. */
  	  && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
  	  /* Don't warn about friends, let add_friend take care of it. */
! 	  && ! DECL_FRIEND_P (newdecl))
  	{
  	  cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
  	  cp_warning_at ("previous declaration of `%D'", olddecl);
--- 3457,3463 ----
  	  /* Don't warn about extern decl followed by definition. */
  	  && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
  	  /* Don't warn about friends, let add_friend take care of it. */
! 	  && ! (DECL_FRIEND_P (newdecl) || DECL_FRIEND_P (olddecl)))
  	{
  	  cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
  	  cp_warning_at ("previous declaration of `%D'", olddecl);