Interpretations

Answering questions that may arise related to the meaning of portions of an IEEE standard concerning specific applications.

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 #109
Topic:
return type of mq_timedreceive() Relevant Sections: 15.2.5.1, Page 55, Line 72 of Draft 14 PASC

The return type of the new function mq_timedreceive() should be ssize_t, not int. This function was meant to be the functional equivalent of mq_receive() with the addition of a timeout capability. The ballot group failed to notice that the return type from the function was different from the original untimed function.

Change "int" in the synopsis line to "ssize_t".

Interpretation Response
The standards states that the return type for function mq_timedreceive() should be int, and conforming implementations must conform to this. However, concerns have been raised about this which are being referred to the sponsor.

Rationale for Interpretation
The return type is inconsistent with mq_receive().

Notes to Project Editor (not part of the interpretation)
This should be fixed as in section 11. Forwarded to Interpretations group: 13 June 2000 Proposed resolution: 13 June 2000 Finalised Interpretation: 25 July 2000