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| -rw-r--r-- | src/string.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c index b4746545a..d6bdd6975 100644 --- a/src/string.c +++ b/src/string.c @@ -519,6 +519,7 @@ str_replace(mrb_state *mrb, struct RString *s1, struct RString *s2) long len; check_frozen(mrb, s1); + if (s1 == s2) return mrb_obj_value(s1); len = RSTR_LEN(s2); if (RSTR_SHARED_P(s1)) { str_decref(mrb, s1->as.heap.aux.shared); |