[C++ PATCH] fix bug 2125

[Nathan Sidwell <nathan at codesourcery dot com>]

Hi,
I've installed this patch on both branch and mainline, as it fixes a 2.95
regression.

namespace scope user declared typedefs never had their DECL_CONTEXT set.
When one of these clobered the implicit typedef of a struct, bad
things happened.

built & tested on i686-pc-linux-gnu, approved by Mark.

nathan
-- 
Dr Nathan Sidwell   ::   http://www.codesourcery.com   ::   CodeSourcery LLC
         'But that's a lie.' - 'Yes it is. What's your point?'
nathan@codesourcery.com : http://www.cs.bris.ac.uk/~nathan/ : nathan@acm.org
2001-04-24  Nathan Sidwell <nathan@codesourcery.com>

	* decl.c (grokdeclarator): Set context of namespace scope
	TYPE_DECLS.

Index: cp/decl.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/cp/decl.c,v
retrieving revision 1.747.2.19
diff -c -3 -p -r1.747.2.19 decl.c
*** decl.c	2001/04/20 23:59:54	1.747.2.19
--- decl.c	2001/04/24 07:56:21
*************** grokdeclarator (declarator, declspecs, d
*** 11018,11025 ****
  	  decl = build_lang_decl (TYPE_DECL, declarator, type);
  	}
        else
! 	decl = build_decl (TYPE_DECL, declarator, type);
! 
        /* If the user declares "typedef struct {...} foo" then the
  	 struct will have an anonymous name.  Fill that name in now.
  	 Nothing can refer to it, so nothing needs know about the name
--- 11018,11029 ----
  	  decl = build_lang_decl (TYPE_DECL, declarator, type);
  	}
        else
! 	{
! 	  decl = build_decl (TYPE_DECL, declarator, type);
! 	  if (!current_function_decl)
! 	    DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
! 	}
!       
        /* If the user declares "typedef struct {...} foo" then the
  	 struct will have an anonymous name.  Fill that name in now.
  	 Nothing can refer to it, so nothing needs know about the name
// Build don't link:
// 
// Copyright (C) 2001 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 11 April 2001 <nathan@codesourcery.com>
// Origin:stephen.webb@cybersafe.com 

// Bug 2125. TYPE_DECLS never had their DECL_CONTEXT set, which
// confused forward references to classes.

typedef void T;
namespace A {
  class C;
  typedef class C C;
  typedef int T;
  class C
  {
    T i;		// got bogus error, found wrong T
  };
}