Bug #2483

String#to_f of small numbers hangs

Added by mikisvaz (Miguel Vazquez) over 2 years ago. Updated about 1 year ago.

[ruby-core:27175]
Status:Feedback Start date:12/15/2009
Priority:Normal Due date:
Assignee:- % Done:

0%
Category:-
Target version:-
ruby -v:ruby 1.8.7 (2009-06-12 patchlevel 174) [i686-linux]

Description

There is a problem in the String#to_f method. It hangs when the float is really small.


This works:
ruby-1.8 -e 'puts "1e-20".to_f'

This hangs:
ruby-1.8 -e 'puts "1e-100".to_f'

History

#1
Updated by mikisvaz (Miguel Vazquez) over 2 years ago

I'm using archlinux. I've just tried several versions of the 1.8, the 174 and the 72 patches and both still hang. 1.9 works fine.

#2
Updated by shyouhei (Shyouhei Urabe) over 1 year ago

  • Status changed from Open to Feedback
Can you see if it still happens?  I can't reproduce the situation on my machine now.

#3
Updated by zimbatm (Jonas Pfenniger) over 1 year ago

Can't reproduce the bug on Mac OS X 10.6.5 with ruby-1.8.7-p302

#4
Updated by sorah (Shota Fukumori) over 1 year ago

Can't reproduce on  OSX10.6.5 and Debian squeeze (amd64) with 1.8 trunk.

[sorah@lemonade]:~/git/ruby/core18/builds/master% ruby -ve 'puts "1e-100".to_f'   
ruby 1.8.8dev (2010-11-24) [i386-darwin10.5.0]
1.0e-100

[sorah@cleveland]:~/git/ruby/core18/builds/master% ruby -ve 'puts "1e-100".to_f'
ruby 1.8.8dev (2010-11-24) [x86_64-linux]
1.0e-100

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