FFI::Library.attach_function raises error with a nonsensical message
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Key: JRUBY-5703
URL: http://jira.codehaus.org/browse/JRUBY-5703
Project: JRuby
Issue Type: Bug
Components: Miscellaneous
Affects Versions: JRuby 1.6
Reporter: John Croisant
Priority: Trivial
FFI::Library.attach_function raises FFI::NotFoundError when the target function
does not exist in the library. But, the FFI::NotFoundError constructor is being
called with the wrong arguments, resulting in a nonsensical error message.
Running this script:
{code:ruby}require 'ffi'
module Foo
extend FFI::Library
ffi_lib FFI::Library::LIBC
attach_function 'missingfunction', [], :void
end
{code}
Results in a nonsensical error message: "FFI::NotFoundError: Function 'Foo' not
found in [missingfunction]". The module name is being used where the function
name should be, and the function name is being used where the library name(s)
should be. Pretty silly. :)
The message should be something like this: "FFI::NotFoundError: Function
'missingfunction' not found in [libc.so.6]"
(I will attach a patch and submit a pull request once I get the issue number
for this.)
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