Bug #1344: sleep(0) sleeps forever on Mac OSX 10.4
http://redmine.ruby-lang.org/issues/show/1344

Author: Sean O'Halpin
Status: Open, Priority: Normal
Category: core, Target version: 1.9.0-5
ruby -v: ruby 1.9.1p0 (2009-01-30 revision 21907) [i386-darwin8.11.1]

Instead of not sleeping at all, sleep(0) sleeps forever on Mac OSX 10.4. Multiruby output below:

$ uname -a
Darwin xxxx 8.11.1 Darwin Kernel Version 8.11.1: Wed Oct 10 18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386 i386 i386
$ multiruby -rtimeout -e 'Timeout::timeout(2) { sleep(0) }'
VERSION = jruby-1.1.6
CMD     = ~/.multiruby/install/jruby-1.1.6/bin/ruby -rtimeout -e Timeout::timeout(2) { sleep(0) }
RESULT = 0

VERSION = jruby-1.2.0RC2
CMD     = ~/.multiruby/install/jruby-1.2.0RC2/bin/ruby -rtimeout -e Timeout::timeout(2) { sleep(0) }
RESULT = 0

VERSION = 1.8.7-p72
CMD     = ~/.multiruby/install/1.8.7-p72/bin/ruby -rtimeout -e Timeout::timeout(2) { sleep(0) }
RESULT = 0

VERSION = v1_8_6_110
CMD     = ~/.multiruby/install/v1_8_6_110/bin/ruby -rtimeout -e Timeout::timeout(2) { sleep(0) }
RESULT = 0

VERSION = v1_9_1_0
CMD     = ~/.multiruby/install/v1_9_1_0/bin/ruby -rtimeout -e Timeout::timeout(2) { sleep(0) }
-e:1:in `sleep': execution expired (Timeout::Error)
        from -e:1:in `block in <main>'
        from -e:1:in `<main>'

RESULT = 256

TOTAL RESULT = 1 failures out of 5

Passed: jruby-1.2.0RC2, jruby-1.1.6, v1_8_6_110, 1.8.7-p72
Failed: v1_9_1_0


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