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* random.c (random_ulong_limited): avoid left shift count >= width of

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type on 32bit environment.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55569 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
naruse 2016-07-04 04:09:51 +00:00
parent 9ca303b923
commit 454f028632
2 changed files with 5 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Mon Jul 4 13:08:48 2016 NARUSE, Yui <naruse@ruby-lang.org>
* random.c (random_ulong_limited): avoid left shift count >= width of
type on 32bit environment.
Sun Jul 3 18:51:42 2016 Martin Duerst <duerst@it.aoyama.ac.jp>
* test/ruby/enc/test_case_comprehensive.rb, test_regex_casefold.rb,

2
random.c
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@ -992,9 +992,7 @@ random_ulong_limited(VALUE obj, rb_random_t *rnd, unsigned long limit)
const int n = w > 32 ? sizeof(unsigned long) : sizeof(uint32_t);
const unsigned long mask = ~(~0UL << w);
const unsigned long full =
#if SIZEOF_LONG == 4
(size_t)n >= sizeof(unsigned long) ? ~0UL :
#endif
~(~0UL << n * CHAR_BIT);
unsigned long val, bits = 0, rest = 0;
do {