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Uninitialized constant in Fiddle::Pointer.malloc #3462

gdelugre opened this issue Nov 15, 2015 · 3 comments · Fixed by #4511

Uninitialized constant in Fiddle::Pointer.malloc #3462

gdelugre opened this issue Nov 15, 2015 · 3 comments · Fixed by #4511


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When allocating memory with Fiddle on JRuby, a NameError exception is raised because the LibC module is not defined.

jruby- :001 > require 'fiddle'
 => true 
jruby- :002 > Fiddle::Pointer.malloc 16
NameError: uninitialized constant Fiddle::Pointer::LibC
    from org/jruby/ `const_missing'
    from /home/user/.rvm/rubies/jruby- `malloc'
    from (irb):2:in `<eval>'
    from org/jruby/ `eval'
    from org/jruby/ `loop'
    from org/jruby/ `catch'
    from org/jruby/ `catch'
    from /home/user/.rvm/rubies/jruby- `<top>'

The related code in stdlib/fiddle/jruby.rb:

    def self.malloc(size, free = nil), size, free ? free : LibC::FREE)
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There are other parts of Fiddle missing, for example Fiddle::Handle::DEFAULT and Fiddle::CParser::TYPE_SIZE_T (which importer tries to use for size_t).

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enebo commented Mar 6, 2017

Original PR was reverted to reopening

@enebo enebo reopened this Mar 6, 2017
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headius commented May 16, 2018

I fixed this one issue for 9.2 Any additional issues should be file separately.

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4 participants