From: viisi@... (Andreas Riedl)
Date: 2001-05-12T11:10:04+09:00
Subject: [ruby-talk:15029] calling .inspect on array/hash causes core dump

hi!

i'm working on a c++ wrapper class for ruby objects.

for debugging purposes i'd be fine to call the 'inspect'
method for these objects. 

sort of

  rb_funcall(value,rb_intern("inspect"),0);

works well for numbers,strings,classes, 
but fails for arrays & hashes.

on the other hand 

  rb_funcall(value,rb_intern("to_s"),0);
  
works for all types, but the result is rather less nice...


as i see it, the reason for this failure is 'rb_ensure'
encountering 'prot_tag' set still to zero. 
(seems 'rb_ensure' assumes to be called inside a
PUSH_TAG/POP_TAG, as if called by 'rb_eval')

so how can i cleanly call 'inspect' on arrays/hashes
without fiddling around with 'eval'?

cioa, andi