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authorjason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>2015-11-12 01:16:59 +0000
committerjason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>2015-11-12 01:16:59 +0000
commitccb738ec9d63ce6a189b5795973ae014d82cc3b9 (patch)
tree7250a3da17005c2fab0587043c0dbd9b898a632a
parent95521921a06ddaf9686e3a9c17dcf5fbd2d33a56 (diff)
downloadgcc-ccb738ec9d63ce6a189b5795973ae014d82cc3b9.tar.gz
* decl.c (duplicate_decls): When combining typedefs, remove the
new type from the variants list. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230202 138bc75d-0d04-0410-961f-82ee72b054a4
-rw-r--r--gcc/cp/ChangeLog5
-rw-r--r--gcc/cp/decl.c17
2 files changed, 21 insertions, 1 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 9cbda291ac7..d1bf1219e00 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,10 @@
2015-11-11 Jason Merrill <jason@redhat.com>
+ * decl.c (duplicate_decls): When combining typedefs, remove the
+ new type from the variants list.
+
+2015-11-11 Jason Merrill <jason@redhat.com>
+
* pt.c (instantiate_class_template_1): Set function_depth around
instantiation of lambda op().
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 76cc1d176e5..383b47d29ed 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -2014,7 +2014,22 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
/* For typedefs use the old type, as the new type's DECL_NAME points
at newdecl, which will be ggc_freed. */
if (TREE_CODE (newdecl) == TYPE_DECL)
- newtype = oldtype;
+ {
+ newtype = oldtype;
+
+ /* And remove the new type from the variants list. */
+ if (TYPE_NAME (TREE_TYPE (newdecl)) == newdecl)
+ {
+ tree remove = TREE_TYPE (newdecl);
+ for (tree t = TYPE_MAIN_VARIANT (remove); ;
+ t = TYPE_NEXT_VARIANT (t))
+ if (TYPE_NEXT_VARIANT (t) == remove)
+ {
+ TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (remove);
+ break;
+ }
+ }
+ }
else
/* Merge the data types specified in the two decls. */
newtype = merge_types (TREE_TYPE (newdecl), TREE_TYPE (olddecl));