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string.c: fix wrong capa

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* string.c (rb_str_resize): update capa only when buffer get
  reallocated.
  http://d.hatena.ne.jp/nagachika/20140613/ruby_trunk_changes_46413_46420#r46413

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46424 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-06-14 01:53:32 +00:00
parent 308960a44e
commit 9729275473
2 changed files with 10 additions and 2 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Sat Jun 14 10:52:15 2014 Nobuyoshi Nakada <nobu@ruby-lang.org>
* string.c (rb_str_resize): update capa only when buffer get
reallocated.
http://d.hatena.ne.jp/nagachika/20140613/ruby_trunk_changes_46413_46420#r46413
Sat Jun 14 08:28:59 2014 Zachary Scott <e@zzak.io>
* man/rake.1: [DOC] Update links for Rake, patch by @hsbt [Bug #9904]

6
string.c
View file

@ -1972,6 +1972,7 @@ rb_str_resize(VALUE str, long len)
slen = RSTRING_LEN(str);
{
long capa;
const int termlen = TERM_LEN(str);
if (STR_EMBED_P(str)) {
if (len == slen) return str;
@ -1996,11 +1997,12 @@ rb_str_resize(VALUE str, long len)
if (len == slen) return str;
str_make_independent_expand(str, len - slen);
}
else if (slen < len || (RSTRING(str)->as.heap.aux.capa - len) > (len < 1024 ? 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);
RSTRING(str)->as.heap.aux.capa = len;
}
else if (len == slen) return str;
RSTRING(str)->as.heap.aux.capa = len;
RSTRING(str)->as.heap.len = len;
TERM_FILL(RSTRING(str)->as.heap.ptr + len, termlen); /* sentinel */
}