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* string.c (rb_str_set_len): bail out when buffer overflowed

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probably.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2010-08-05 11:00:18 +00:00
parent 50b5049921
commit b80ddbf461
2 changed files with 10 additions and 0 deletions
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ChangeLog
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@ -1,3 +1,8 @@
Thu Aug 5 19:59:55 2010 Nobuyoshi Nakada <nobu@ruby-lang.org>
* string.c (rb_str_set_len): bail out when buffer overflowed
probably.
Thu Aug 5 19:51:21 2010 Nobuyoshi Nakada <nobu@ruby-lang.org> Thu Aug 5 19:51:21 2010 Nobuyoshi Nakada <nobu@ruby-lang.org>
* compile.c (iseq_compile_each): drop unused ARGSCAT results. * compile.c (iseq_compile_each): drop unused ARGSCAT results.

5
string.c
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@ -1693,10 +1693,15 @@ rb_str_unlocktmp(VALUE str)
void void
rb_str_set_len(VALUE str, long len) rb_str_set_len(VALUE str, long len)
{ {
long capa;
str_modifiable(str); str_modifiable(str);
if (STR_SHARED_P(str)) { if (STR_SHARED_P(str)) {
rb_raise(rb_eRuntimeError, "can't set length of shared string"); rb_raise(rb_eRuntimeError, "can't set length of shared string");
} }
if (len > (capa = (long)rb_str_capacity(str))) {
rb_bug("probable buffer overflow: %ld for %ld", len, capa);
}
STR_SET_LEN(str, len); STR_SET_LEN(str, len);
RSTRING_PTR(str)[len] = '\0'; RSTRING_PTR(str)[len] = '\0';
} }