1 files changed, 1 insertions, 0 deletions
diff --git a/string.c b/string.c
index c0bd42d464..0f932a6b5e 100644
--- a/string.c
+++ b/string.c
@@ -201,6 +201,7 @@ rb_str_new4(orig)
     else {
 	str = str_new4(klass, orig);
     }
+    OBJ_INFECT(str, orig);
     OBJ_FREEZE(str);
     return str;
 }