Pietro Cerutti 4c524a4287 - Return NULL and set errno to EINVAL if size is 0 (as required by POSIX).
Update the manpage to reflect this change.
- Always set the current position to the first null-byte when opening in append
mode. This makes the implementation compatible with glibc's. Update the test
suite.

Reported by:	pho
Approved by:	cognet
2014-06-02 13:48:57 +00:00
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