diff options
Diffstat (limited to 'string.c')
| -rw-r--r-- | string.c | 11 |
1 files changed, 7 insertions, 4 deletions
@@ -2034,9 +2034,11 @@ rb_str_resize(VALUE str, long len) independent = str_independent(str); ENC_CODERANGE_CLEAR(str); slen = RSTRING_LEN(str); - if (len != slen) { + { + long capa; const int termlen = TERM_LEN(str); if (STR_EMBED_P(str)) { + if (len == slen) return str; if (len + termlen <= RSTRING_EMBED_LEN_MAX + 1) { STR_SET_EMBED_LEN(str, len); TERM_FILL(RSTRING(str)->as.ary + len, termlen); @@ -2056,14 +2058,15 @@ rb_str_resize(VALUE str, long len) return str; } else if (!independent) { + if (len == slen) return str; str_make_independent_expand(str, len - slen); } - else if (slen < len || slen - len > 1024) { + else if ((capa = RSTRING(str)->as.heap.aux.capa) < len || + (capa - len) > (len < 1024 ? len : 1024)) { REALLOC_N(RSTRING(str)->as.heap.ptr, char, len + termlen); - } - if (!STR_NOCAPA_P(str)) { RSTRING(str)->as.heap.aux.capa = len; } + else if (len == slen) return str; RSTRING(str)->as.heap.len = len; TERM_FILL(RSTRING(str)->as.heap.ptr + len, termlen); /* sentinel */ } |