name-lookup.c (suggest_alternatives_for): Use qualified lookup sans using directives.

	* name-lookup.c (suggest_alternatives_for): Use qualified lookup
	sans using directives.  Don't walk into inline namespaces.

	* g++.dg/pr45330.C: Add inline namespace case.

From-SVN: r248938

gcc/cp/ChangeLog

 2017-06-06  Nathan Sidwell  <nathan@acm.org>
 
+	* name-lookup.c (suggest_alternatives_for): Use qualified lookup
+	sans using directives.  Don't walk into inline namespaces.
+
 	PR c++/80979
 	* name-lookup.c (adl_class_only): Don't add visible friends.
 

gcc/cp/name-lookup.c

@@ -4714,9 +4714,10 @@ suggest_alternatives_for (location_t location, tree name,
   for (unsigned ix = 0; ix != worklist.length (); ix++)
     {
       tree ns = worklist[ix];
+      name_lookup lookup (name);
 
-      if (tree value = ovl_skip_hidden (find_namespace_value (ns, name)))
-	candidates.safe_push (value);
+      if (lookup.search_qualified (ns, false))
+	candidates.safe_push (lookup.value);
 
       if (!limited)
 	{
@@ -4728,7 +4729,8 @@ suggest_alternatives_for (location_t location, tree name,
 	  for (tree decl = NAMESPACE_LEVEL (ns)->names;
 	       decl; decl = TREE_CHAIN (decl))
 	    if (TREE_CODE (decl) == NAMESPACE_DECL
-		&& !DECL_NAMESPACE_ALIAS (decl))
+		&& !DECL_NAMESPACE_ALIAS (decl)
+		&& !DECL_NAMESPACE_INLINE_P (decl))
 	      children.safe_push (decl);
 
 	  while (!limited && !children.is_empty ())

gcc/testsuite/ChangeLog

+2017-06-06  Nathan Sidwell  <nathan@acm.org>
+
+	* g++.dg/pr45330.C: Add inline namespace case.
+
 2017-06-06  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/80975

gcc/testsuite/g++.dg/pr45330.C

-// { dg-do compile }
+// { dg-do compile { target c++11 } }
 // Search std, __cxxabiv1, and global namespaces, plus two more,
 // breadth first
 
@@ -17,7 +17,10 @@ namespace A
 
 namespace B
 {
-  int foo;			// { dg-message "B::foo" "suggested alternative" }
+  inline namespace I
+  {
+    int foo;			// { dg-message "B::I::foo" "suggested alternative" }
+  }
 }
 
 namespace C