IEEE Standards Interpretation for IEEE Std 1003.1™-1990 IEEE Standard for Information Technology--Portable Operating System Interfaces (POSIX®)
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Interpretation Request #78
Topic: opendir() error return value Relevant Sections: 220.127.116.11
Standard:1003.1-1996 (second edition 1996-07-12) SubSection:18.104.22.168 (line 118) function shall return -1 and set errno to the corresponding value Question: The following sources document the return value as NULL: 1003.1-1996 subsection 22.214.171.124 line 94 1003.1b-1993 subsection 126.96.36.199 line 74 1003.1b-1993 subsection 188.8.131.52 line 96 2003.1-1992 subsection 184.108.40.206.4 line 253 Does line 118 of std 1003.1-1996 subsection 220.127.116.11 indicate a new contradiction or a typographical error?
Suggested Correction: The clause should be changed to: function shall return NULL and set errno to the corresponding value
This is a typographical error. The published IEEE Std 1003.1-1996 is inconsistent with IEEE Std 1003.1-1990 and IEEE Std 1003.1b-1993. Clauses 18.104.22.168 ll 102 & 114 should be changed to say: function shall return NULL and set errno to the corresponding value It is recommended that this be fixed by applying the IEEE erratta process.
Rationale for Interpretation
The approved IEEE Std 1003.1-1990 does not include this wording. IEEE Std 1003.1-1996 is a re-publication of 1003.1-1990 merged together with the amendments. Since there are intended to be no substantive changes apart from the merging of the amendments, this would appear to be a problem introduced with the merge. Forwarded to Interpretations group: Sep 17 1996 Review start: Oct 22 1996 Finalised: Nov 24 1996