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string.c: empty non-embed case

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* string.c (str_buf_cat): consider empty non-embed string case,
  not to loop infinitely.  [ruby-core:70074] [Bug #11383]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51428 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-07-29 07:00:25 +00:00
parent 149dadf368
commit 6f65a0ebf2
2 changed files with 15 additions and 5 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Wed Jul 29 16:00:22 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
* string.c (str_buf_cat): consider empty non-embed string case,
not to loop infinitely. [ruby-core:70074] [Bug #11383]
Wed Jul 29 15:25:19 2015 Nobuyoshi Nakada <nobu@ruby-lang.org>
* vm_eval.c (send_internal): set method_missing_reason before

15
string.c
View file

@ -2292,12 +2292,17 @@ str_buf_cat(VALUE str, const char *ptr, long len)
}
total = olen + len;
if (capa <= total) {
while (total > capa) {
if (capa > LONG_MAX / 2) {
capa = (total + 4095) / 4096 * 4096;
break;
if (LIKELY(capa > 0)) {
while (total > capa) {
if (capa > LONG_MAX / 2) {
capa = (total + 4095) / 4096 * 4096;
break;
}
capa = 2 * capa;
}
capa = 2 * capa;
}
else {
capa = total;
}
RESIZE_CAPA_TERM(str, capa, termlen);
sptr = RSTRING_PTR(str);