diff options
Diffstat (limited to 'string.c')
-rw-r--r-- | string.c | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -517,8 +517,11 @@ rb_str_dup_frozen(str) VALUE str; { if (FL_TEST(str, ELTS_SHARED)) { - OBJ_FREEZE(RSTRING(str)->aux.shared); - return RSTRING(str)->aux.shared; + VALUE shared = RSTRING(str)->aux.shared; + if (RSTRING(shared)->len == RSTRING(str)->len) { + OBJ_FREEZE(shared); + return shared; + } } if (OBJ_FROZEN(str)) return str; str = rb_str_dup(str); |