If you evaluate the following two statements together 10 + 11 + 12 + 13 + 14 + 15 + 16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39. [:a :b :c | self halt] value: 0 value: 0 value: 0.
you are dropped into an emergency evaluator (in a non-closure image anyway). Evaluating each statement individually is no problem.
If you have fun figuring out puzzling behavior or want to prove your Squeak Skillz you might try to investigate it. If you need hints, scroll down to (*).
For the rest, a fix and explanation is on Mantis:
http://bugs.squeak.org/view.php?id=7355
- Bert -
(*) These lines
10 + 11 + 12 + 13 + 14 + 15 + 16 + 17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40. [:a :b :c | ] decompile
let you debug the issue. Full explanation below (**)
(**) The decompiler fails because the #blockCopy: argument is the 33rd literal and hence uses an extended byte code to push. This is not anticipated by the decompiler which assumes a single-byte instruction is used to push the argument. And if this explanation does not make sense to you ... you've got a lot to learn about the inner workings of Squeak ;)