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* numeric.c (fix_aref): avoid a possible undefined behavior.

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1L << 63 on 64-bit platform is undefined, at least, according to
  ISO/IEC 9899 (C99) 6.5.7.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43222 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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mame 2013-10-09 15:08:41 +00:00
parent 24cf72029f
commit 487a25d29b
2 changed files with 7 additions and 1 deletions
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ChangeLog
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@ -1,3 +1,9 @@
Thu Oct 10 00:02:35 2013 Yusuke Endoh <mame@tsg.ne.jp>
* numeric.c (fix_aref): avoid a possible undefined behavior.
1L << 63 on 64-bit platform is undefined, at least, according to
ISO/IEC 9899 (C99) 6.5.7.
Wed Oct 9 23:57:02 2013 Nobuyoshi Nakada <nobu@ruby-lang.org>
* object.c (id_for_attr): avoid inadvertent symbol creation.

2
numeric.c
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@ -3443,7 +3443,7 @@ fix_aref(VALUE fix, VALUE idx)
i = FIX2LONG(idx);
if (i < 0) return INT2FIX(0);
if (SIZEOF_LONG*CHAR_BIT-1 < i) {
if (SIZEOF_LONG*CHAR_BIT-1 <= i) {
if (val < 0) return INT2FIX(1);
return INT2FIX(0);
}