Date: Tue, 5 Jul 2016 13:07:00 -0700 From: "Ngie Cooper (yaneurabeya)" <yaneurabeya@gmail.com> To: Dimitry Andric <dim@FreeBSD.org> Cc: Roman Divacky <rdivacky@freebsd.org>, Pedro Giffuni <pfg@freebsd.org>, FreeBSD current <freebsd-current@freebsd.org> Subject: clang 3.3/3.4 fails to build items that use stdlib.h because of __alloc_size attribute assigned to posix_memalign Message-ID: <838A69F7-343D-4398-928B-E54FB966B574@gmail.com>
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Hi,
It looks like clang 3.3/3.4 from ports both don=E2=80=99t like =
__alloc_size being attached to posix_memalign. This only concerns me =
because it might make the src upgrade path from 9.3/10.3 to 11.0 =
painful.
Thoughts on how this should be fixed or whether or not we care?
Thanks,
-Ngie
$ cd usr.sbin/bhyve; make clean; script ts make all CC=3Dclang34
...
In file included from /usr/src/svn/usr.sbin/bhyve/atkbdc.c:40:
/usr/include/stdlib.h:176:6: error: '__alloc_size__' attribute only =
applies to functions that return a pointer =
[-Werror,-Wignored-attributes]
__alloc_size(3); /* (ADV) */
^
/usr/include/sys/cdefs.h:241:40: note: expanded from macro =
'__alloc_size'
#define __alloc_size(x) __attribute__((__alloc_size__(x)))
^
1 error generated.
*** Error code 1
Stop.
make: stopped in /usr/src/svn/usr.sbin/bhyve
$ (set -x; clang33 --version; clang34 --version)
+ clang33 --version
clang version 3.3 (tags/RELEASE_33/final)
Target: x86_64-portbld-freebsd11.0
Thread model: posix
+ clang34 --version
clang version 3.4.2 (tags/RELEASE_34/dot2-final)
Target: x86_64-portbld-freebsd11.0
Thread model: posix
282988 pfg int posix_memalign(void **, size_t, size_t) =
__nonnull(1) __alloc_align(2)
281130 pfg __alloc_size(3); /* (ADV) =
*/
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