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* 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
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commit 4e4649e13cd4175aab75a0edc2fc5b082cf735d1 1 parent 3b58e17
@nurse nurse authored
Showing with 6 additions and 1 deletion.
  1. +5 −0 ChangeLog
  2. +1 −1  numeric.c
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5 ChangeLog
@@ -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#=~.
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2  numeric.c
@@ -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;
}
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