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Date: Mon, 4 Jul 2011 20:44:24 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: cluts - posix_memalign test
I recently fixed the issue with musl's posix_memalign not returning
failure when the align argument is smaller than sizeof(size_t), but
cluts is still throwing an error in that case:
W:posix_memalign returned EINVAL, but gave a non-NULL pointer (alignment=1)
I believe this error is mistaken. posix_memalign is not giving a
non-NULL pointer to the caller. Rather the caller is seeing the value
it wrote to the pointer before making the call.
I suppose some versions of posix_memalign might clear the pointer to
null if allocation fails, but I could find no text in the standard
that requires or even allows posix_memalign to modify the pointer when
it fails, so at present musl does not touch it.
I'd welcome input from anyone who has a good argument that this is
incorrect, but short of that, I think cluts is checking a condition
that need not (and maybe can't) be true.
Rich
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