[antlr-interest] Is ANTLR Hallucinating?

Randall R Schulz rschulz at sonic.net
Mon Jun 25 11:33:36 PDT 2007


I have this production in an ANTLR grammar:

  : clText * EOF

It elicits this error from ANTLR:

warning(200): CLIF.g:1371:4: Decision can match input such as "{EOF, Open}" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
warning(201): CLIF.g:1371:4: The following alternatives are unreachable: 2

Why is it talking about alternatives in a rule that has none?

Randall Schulz

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