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author | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-05-30 01:28:37 +0000 |
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committer | naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2011-05-30 01:28:37 +0000 |
commit | 4e4649e13cd4175aab75a0edc2fc5b082cf735d1 (patch) | |
tree | d1a87441c848bb19989cf86167658479ac32ffc0 | |
parent | 3b58e17d7bc1c2afe0d7b8190f1b113f3138063a (diff) | |
download | ruby-4e4649e13cd4175aab75a0edc2fc5b082cf735d1.tar.gz |
* numeric.c (int_pow): make sure to assign the result of x * z.
If xz is optimized out, the value won't overflow.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31805 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | ChangeLog | 5 | ||||
-rw-r--r-- | numeric.c | 2 |
2 files changed, 6 insertions, 1 deletions
@@ -1,3 +1,8 @@ +Mon May 30 10:26:51 2011 NARUSE, Yui <naruse@ruby-lang.org> + + * numeric.c (int_pow): make sure to assign the result of x * z. + If xz is optimized out, the value won't overflow. + Sun May 29 23:17:29 2011 NARUSE, Yui <naruse@ruby-lang.org> * re.c (rb_reg_match): fix rdoc of Regexp#=~. @@ -2637,7 +2637,7 @@ int_pow(long x, unsigned long y) y >>= 1; } { - long xz = x * z; + volatile long xz = x * z; if (!POSFIXABLE(xz) || xz / x != z) { goto bignum; } |