From ed4aed86fbfdc8133148c6ffa2e03312a601a3cd Mon Sep 17 00:00:00 2001 From: nobu Date: Fri, 17 Jun 2016 23:52:48 +0000 Subject: stringio.c: fix index overflow * ext/stringio/stringio.c (strio_getline): fix pointer index overflow. reported by Guido Vranken . git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55432 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/stringio/stringio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'ext/stringio') diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c index 4fdc4df51e..f35c702d0a 100644 --- a/ext/stringio/stringio.c +++ b/ext/stringio/stringio.c @@ -1021,7 +1021,7 @@ strio_getline(int argc, VALUE *argv, struct StringIO *ptr) s = RSTRING_PTR(ptr->string); e = s + RSTRING_LEN(ptr->string); s += ptr->pos; - if (limit > 0 && s + limit < e) { + if (limit > 0 && (size_t)limit < (size_t)(e - s)) { e = rb_enc_right_char_head(s, s + limit, e, get_enc(ptr)); } if (NIL_P(str)) { -- cgit v1.2.3