[antlr-interest] Failure on OpenJDK on Debian

[Gavin Lambert]

At 09:45 1/04/2009, Ola Bini wrote:
 >> Looks like your lexer rules are ambiguous (which probably 
isn't
 >> helped by the fact that you're also using literals in your
 >> parser rules).
 >> You should definitely consider correcting your rules so that
 >> the ambiguity warnings go away; doing that should make the
 >> error go away as well.
 >>
 >I don't have any ambiguity warnings on any other Java
 >implementation.

Perhaps not, but it's still suggestive.  If your rules aren't 
fully left-factored then ANTLR often can work out the right thing 
to do, but it'll be slower than if they were factored properly -- 
and every once in a while you'll get a "surprise" when you change 
some other part of the grammar :)

So if that particular runtime executes slower than other variants, 
it might be hitting the timeout on that version but just barely 
squeaking through on others.