From 5d8a39b7a23e73be46f1960250792bbc239d6533 Mon Sep 17 00:00:00 2001
From: dodji <dodji@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 5 Oct 2008 21:29:32 +0000
Subject: 2008-09-30  Dodji Seketeli  <dodji@redhat.com> gcc/ChangeLog:

	PR c++/37410
	* dwarf2out.c (dwarf2out_imported_module_or_decl): Split this
	  function in two, making it call a new and reusable
	  dwarf2out_imported_module_or_decl() that takes the containing
	  BLOCK of the declaration in argument.
	  (dwarf2out_imported_module_or_decl_real): New function.
	  (decls_for_scope, gen_decl_die, dwarf2out_decl): Take
	  IMPORTED_DECL in account.
	* tree.def: Added IMPORTED_DECL node type.
	* tree.h: Added accessors for IMPORTED_DECL nodes.
	* tree.c (init_ttree): Initialise IMPORTED_DECL node type.

gcc/cp/ChangeLog:

	PR c++/37410
	* cp-gimplify.c (cp_gimplify_expr): For each USING_STMT
	  make sure an IMPORTED_DECL node is added to the BLOCK_VARS list
	  of the innermost containing BLOCK.

gcc/testsuite/ChangeLog:

	PR c++/37410
	* g++.dg/debug/dwarf2/imported-module.C: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@140895 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/tree.def | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'gcc/tree.def')

diff --git a/gcc/tree.def b/gcc/tree.def
index ef103cdba50..bde59b7016c 100644
--- a/gcc/tree.def
+++ b/gcc/tree.def
@@ -371,6 +371,17 @@ DEFTREECODE (MEMORY_PARTITION_TAG, "memory_partition_tag", tcc_declaration, 0)
    _DECLs, providing a hierarchy of names.  */
 DEFTREECODE (NAMESPACE_DECL, "namespace_decl", tcc_declaration, 0)
 
+/* A declaration import.
+   The C++ FE uses this to represent a using-directive; eg:
+   "using namespace foo".
+   But it could be used to represent any declaration import construct.
+   Whenever a declaration import appears in a lexical block, the BLOCK node
+   representing that lexical block in GIMPLE will contain an IMPORTED_DECL
+   node, linked via BLOCK_VARS accessor of the said BLOCK.
+   For a given NODE which code is IMPORTED_DECL,
+   IMPORTED_DECL_ASSOCIATED_DECL (NODE) accesses the imported declaration.  */
+DEFTREECODE (IMPORTED_DECL, "imported_decl", tcc_declaration, 0)
+
 /* A translation unit.  This is not technically a declaration, since it
    can't be looked up, but it's close enough.  */
 DEFTREECODE (TRANSLATION_UNIT_DECL, "translation_unit_decl",\
-- 
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