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Sun Studio 12: C User's Guide
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Appendix E Implementation-Defined ISO/IEC C90 Behavior
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E.1 Implementation Compared to the ISO Standard
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E.1.3 Identifiers (G.3.3)
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E.1.3.1 (6.1.2) The number of significant initial characters (beyond 31) in an identifier without external linkage:
> (6.1.2) The number of significant initial characters (beyond 6) in an identifier with external linkage:
Sun Studio 12: C User's Guide
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: E.1.2 Environment (G.3.2)
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(6.1.2) The number of significant initial characters (beyond 6) in an identifier with external linkage:
The first 1,023 characters are significant. Identifiers are case-sensitive.
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