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Grammar tests > Warnings


The following messages are warnings.  They may indicate an error but they may also describe desired effects. The generated compiler parts may still be valid.  If an LL(1) error is reported for a construct X, one must be aware that the generated parser will choose the first of several possible alternatives for X.


Following warnings can appear:


1. "X" is nullable

2. LL(1) error: "X" is the start of several alternatives

3. LL(1) error: "X" is the start and successor of nullable structures



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