C++ PATCH for objc++/49221 (many EH fails in objc++ testsuite)

C++ PATCH for objc++/49221 (many EH fails in objc++ testsuite)

[Jason Merrill]

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This was happening because objc_eh_runtime_type wanted to create global 
decls while we were in the middle of processing a function, and 
cp_finish_decl assumed that if we're in a function the decl must belong 
to the function.  We can avoid that assumption by checking the 
DECL_CONTEXT rather than current scope.

Tested x86_64-pc-linux-gnu, applying to trunk.

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commit ea2b4023d77cbb75ffdb0f71fec35d366b759a70
Author: Jason Merrill <jason@redhat.com>
Date:   Sun Jun 5 23:42:13 2011 -0400

    	PR objc++/49221
    	* decl.c (cp_finish_decl): Check DECL_FUNCTION_SCOPE_P rather than
    	at_function_scope_p.

diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 232b5cf..30f70d9 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -6190,7 +6190,7 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,
   /* Add this declaration to the statement-tree.  This needs to happen
      after the call to check_initializer so that the DECL_EXPR for a
      reference temp is added before the DECL_EXPR for the reference itself.  */
-  if (at_function_scope_p ())
+  if (DECL_FUNCTION_SCOPE_P (decl))
     add_decl_expr (decl);
 
   /* Let the middle end know about variables and functions -- but not