2010-02-05 Sami Wagiaalla <swagiaal@redhat.com>

	PR c++/7935:
	* gdb.cp/namespace-using.exp: Removed kfail; bug has been fixed.

2010-02-05  Sami Wagiaalla  <swagiaal@redhat.com>

	PR c++/7935:
	* cp-support.h: Added char* alias element to using_direct data
	struct.
	(cp_add_using): Added char* alias argument.
	(cp_add_using_directive): Ditto.
	* cp-namespace.c: Updated with the above changes.
	(cp_lookup_symbol_imports): Check for aliases.
	* dwarf2read.c (read_import_statement): Figure out local alias
	for the import and pass it on to cp_add_using.
	(read_namespace): Pass alias argument to cp_add_using.

1 files changed, 35 insertions, 12 deletions

diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
index 8ca9c20..5e894d4 100644
--- a/gdb/cp-namespace.c
+++ b/gdb/cp-namespace.c
@@ -117,7 +117,7 @@ cp_scan_for_anonymous_namespaces (const struct symbol *symbol)
 		 anonymous namespace.  So add symbols in it to the
 		 namespace given by the previous component if there is
 		 one, or to the global namespace if there isn't.  */
-	      cp_add_using_directive (dest, src);
+	      cp_add_using_directive (dest, src, NULL);
 	    }
 	  /* The "+ 2" is for the "::".  */
 	  previous_component = next_component + 2;
@@ -132,7 +132,7 @@ cp_scan_for_anonymous_namespaces (const struct symbol *symbol)
    has already been added, don't add it twice.  */
 
 void
-cp_add_using_directive (const char *dest, const char *src)
+cp_add_using_directive (const char *dest, const char *src, const char *alias)
 {
   struct using_direct *current;
   struct using_direct *new;
@@ -146,7 +146,7 @@ cp_add_using_directive (const char *dest, const char *src)
 	return;
     }
 
-  using_directives = cp_add_using (dest, src, using_directives);
+  using_directives = cp_add_using (dest, src, alias, using_directives);
 
 }
 
@@ -198,8 +198,9 @@ cp_is_anonymous (const char *namespace)
 	  != NULL);
 }
 
-/* Create a new struct using direct which imports the namespace SRC
-   into the scope DEST.
+/* Create a new struct using direct which imports the namespace SRC into the
+   scope DEST.  ALIAS is the name of the imported namespace in the current
+   scope.  If ALIAS is NULL then the namespace is known by its original name.
    Set its next member in the linked list to NEXT; allocate all memory
    using xmalloc.  It copies the strings, so NAME can be a temporary
    string.  */
@@ -207,6 +208,7 @@ cp_is_anonymous (const char *namespace)
 struct using_direct *
 cp_add_using (const char *dest,
               const char *src,
+              const char *alias,
 	      struct using_direct *next)
 {
   struct using_direct *retval;
@@ -214,6 +216,12 @@ cp_add_using (const char *dest,
   retval = xmalloc (sizeof (struct using_direct));
   retval->import_src = savestring (src, strlen(src));
   retval->import_dest = savestring (dest, strlen(dest));
+
+  if (alias != NULL)
+    retval->alias = savestring (alias, strlen (alias));
+  else
+    retval->alias = NULL;
+
   retval->next = next;
   retval->searched = 0;
 
@@ -344,13 +352,28 @@ cp_lookup_symbol_imports (const char *scope,
 	current->searched = 1;
 	searched_cleanup = make_cleanup (reset_directive_searched, current);
 
-	sym = cp_lookup_symbol_namespace (current->import_src,
-	                                  name,
-	                                  linkage_name,
-	                                  block,
-	                                  domain,
-	                                  0);
-
+	if (current->alias != NULL && strcmp (name, current->alias) == 0)
+	  /* If the import is creating an alias and the alias matches the
+	     sought name.  Pass current->import_src as the NAME to direct the
+	     search towards the aliased namespace.  */
+	  {
+	    sym = cp_lookup_symbol_in_namespace (scope,
+	                                         current->import_src,
+	                                         linkage_name,
+	                                         block,
+	                                         domain);
+	  }
+	else if (current->alias == NULL)
+	  {
+	    /* If this import statement creates no alias, pass current->inner as
+               NAMESPACE to direct the search towards the imported namespace.  */
+	    sym = cp_lookup_symbol_imports (current->import_src,
+	                                    name,
+	                                    linkage_name,
+	                                    block,
+	                                    domain,
+	                                    0);
+	  }
 	current->searched = 0;
 	discard_cleanups (searched_cleanup);