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-rw-r--r--gcc/cp/tree.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index f9df932..9126763 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -877,6 +877,17 @@ cp_build_qualified_type_real (tree type,
&& TYPE_LANG_SPECIFIC (result) == TYPE_LANG_SPECIFIC (type))
TYPE_LANG_SPECIFIC (result) = NULL;
+ /* We may also have ended up building a new copy of the canonical
+ type of a pointer-to-method type, which could have the same
+ sharing problem described above. */
+ if (TYPE_CANONICAL (result) != TYPE_CANONICAL (type)
+ && TREE_CODE (type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (type)) == METHOD_TYPE
+ && (TYPE_LANG_SPECIFIC (TYPE_CANONICAL (result))
+ == TYPE_LANG_SPECIFIC (TYPE_CANONICAL (type))))
+ TYPE_LANG_SPECIFIC (TYPE_CANONICAL (result)) = NULL;
+
+
return result;
}