diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-03-27 23:18:52 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-03-27 23:18:52 +0000 |
commit | 9ae4c2d59098ce6158385dda2539d2b36a03c090 (patch) | |
tree | 305ab7c3b2fff3a65b3f2ea3f40392f3c1835dd6 /sprintf.c | |
parent | d1e2d6a9c52749912e8239d51b6beb5c6d9de943 (diff) |
sprintf.c: fix buffer overflow
* sprintf.c (rb_str_format): fix buffer overflow, length must be
greater than precision. reported by William Bowling <will AT
wbowling.info>.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'sprintf.c')
-rw-r--r-- | sprintf.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -1070,7 +1070,7 @@ rb_str_format(int argc, const VALUE *argv, VALUE fmt) } val = rb_int2str(num, 10); len = RSTRING_LEN(val) + zero; - if (prec >= len) ++len; /* integer part 0 */ + if (prec >= len) len = prec + 1; /* integer part 0 */ if (sign || (flags&FSPACE)) ++len; if (prec > 0) ++len; /* period */ CHECK(len > width ? len : width); |