[LRUG] Ruby 1.9 problem - mutex lib not loading properly

[Alex MacCaw]

I'm trying to evaluate Ruby (1.9) from C++.

The code looks something like this:

   rb_eval_string_protect("require 'thread'; m = Mutex.new; m.synchronize
{};", &error);

The error I get is: undefined method `synchronize' for #<Mutex:0x1f8cf4>

It looks like the mutex class (which is written in C) isn't getting loaded
properly. Anybody got any ideas as to why?
The code works fine in Ruby 1.8

http://pastie.org/579760

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