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| author | Kazuho Oku <[email protected]> | 2015-09-10 22:50:01 +0900 |
|---|---|---|
| committer | Kazuho Oku <[email protected]> | 2015-09-10 22:50:01 +0900 |
| commit | 8256d77c7fe551011cc744ddb204ca20c4eea175 (patch) | |
| tree | df73da23e9b714131cddd76631e41e91a099495b /src/hash.c | |
| parent | 44eb1492bed2f9584623ec10ecf14cc46af4bf12 (diff) | |
| download | mruby-8256d77c7fe551011cc744ddb204ca20c4eea175.tar.gz mruby-8256d77c7fe551011cc744ddb204ca20c4eea175.zip | |
avoid unnecessary string duplications by checking the frozen flag
Diffstat (limited to 'src/hash.c')
| -rw-r--r-- | src/hash.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/hash.c b/src/hash.c index 42b40482a..ffb8bd931 100644 --- a/src/hash.c +++ b/src/hash.c @@ -104,12 +104,11 @@ static void mrb_hash_modify(mrb_state *mrb, mrb_value hash); static inline mrb_value mrb_hash_ht_key(mrb_state *mrb, mrb_value key) { - if (mrb_string_p(key)) { + if (mrb_string_p(key) && !RSTR_FROZEN_P(mrb_str_ptr(key))) { key = mrb_str_dup(mrb, key); RSTR_SET_FROZEN_FLAG(mrb_str_ptr(key)); - return key; - } else - return key; + } + return key; } #define KEY(key) mrb_hash_ht_key(mrb, key) |