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Re: lib/41567 (posix_memalign(3) taints errno when it shouldn't.)
Synopsis: posix_memalign(3) taints errno when it shouldn't.
State-Changed-When: Sun, 19 Jul 2009 07:27:04 +0000
The standard (ISO/IEC 9899:1999, 7.5#3) is clear on this issue:
The value of errno may be set to nonzero by a library
function call whether or not there is an error, provided
the use of errno is not documented in the description
of the function in this International Standard.
Documenting this in posix_memalign(3) alone would be taking
the wrong road, too; this is a general concept which fits
errno(2) better, with the issue of errno(2) currently
addressing the behavior if system calls only.
In any case, "nice to have" in this case boils down to
encouragement of non-portable use of the interface.
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