diff options
Diffstat (limited to 'string.c')
-rw-r--r-- | string.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -1506,10 +1506,13 @@ str_duplicate(VALUE klass, VALUE str) MEMCPY(RSTRING(dup)->as.ary, RSTRING(str)->as.ary, char, embed_size); if (flags & STR_NOEMBED) { - if (UNLIKELY(!(flags & FL_FREEZE))) { - str = str_new_frozen(klass, str); - FL_SET_RAW(str, flags & FL_TAINT); - flags = FL_TEST_RAW(str, flag_mask); + if (FL_TEST_RAW(str, STR_SHARED)) { + str = RSTRING(str)->as.heap.aux.shared; + } + else if (UNLIKELY(!(flags & FL_FREEZE))) { + str = str_new_frozen(klass, str); + FL_SET_RAW(str, flags & FL_TAINT); + flags = FL_TEST_RAW(str, flag_mask); } if (flags & STR_NOEMBED) { RB_OBJ_WRITE(dup, &RSTRING(dup)->as.heap.aux.shared, str); |