A generic solution (cont'd)

 1   #define RUBY_TRY \ 
 2     int ruby_jump_tag = 0; \ 
 3     VALUE ruby_exc = Qnil; \ 
 4     goto start_of_RUBY_TRY; \ 
 5     ruby_exception: rb_exc_raise(ruby_exc); \ 
 6     ruby_jump_tag: rb_jump_tag(ruby_jump_tag); \ 
 7     start_of_RUBY_TRY: \ 
 8     try