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™-2001 IEEE Standard Standard for Information Technology -- Portable Operating System Interface (POSIX®)

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Interpretation Request #63
Topic: pthread_self EINTR Relevant Sections: XSH pthread_self Page: 1147 Line: 36097

The pthread_self() function shall not return an error code of [EINTR].

This is bogus, because pthread_self() does not return error codes (errno values), it returns a pthread_t. This might not be a scalar type, and even if it is, the value of EINTR might be a valid thread ID. The requirements for pthread_self() regarding errors should be the same as getpid().

Delete line 36097.

On line 36094 replace "Refer to the DESCRIPTION" with "The pthread_self() function shall always be successful and no return value is reserved to indicate an error".

Interpretation Response #63
The standards states the requiremements for pthread_self(), and conforming implementations must conform to this. However, concerns have been raised about this which are being referred to the sponsor.

Rationale for Interpretation