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Last update: 1997-05-20
9945-2-111 _____________________________________________________________________________ Topic: yacc Relevant Sections: A.3.7.4 Defect Report: ----------------------- Date: Thu, 20 Apr 1995 08:49:56 -0400 From: "David J. Fiander" <[email protected]> Sirs, I request an interpretation of ISO/IEC 9945-2:1993, section A.3.7.4: yacc, Interface the the Lexical Analyzer. Lines 1133-1134 state that "All assigned token numer shall be unique and distinct from the token numbers used for literals." Historically, this uniqueness has only been guaranteed among the token numbers assigned by yacc; it was possible for yacc-assigned token numbers to have the same value as user-assigned token numbers. My question is, should the above quotation from the standard be taken to mean that YACC-assigned token numbers are unique among themselves, or across all token numbers, including user-assigned ones? Interpretation response ------------------------ The standard is unclear on this issue, and no conformance distinction can be made between alternative implementations based on this. This is being referred to the sponsor. Rationale: None Forwarded to Interpretations group: Apr 20 1995 Proposed resolution circulated: May 16th Comments due: June 15th Finalised: June 16th 1995