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WG14 N2350 made very clear that it is an UB having type definitions
within "offsetof" [1]. This patch enhances the implementation of macro
alignof_slot to use builtin "_Alignof" to avoid undefined behavior on
when using std=c11 or newer
clang 16+ has started to flag this [2]
Fixes build when using -std >= gnu11 and using clang16+
Older compilers gcc < 4.9 or clang < 8 has buggy _Alignof even though it
may support C11, exclude those compilers too
[1] https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2350.htm
[2] https://reviews.llvm.org/D133574
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
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To meet requirements of Common Criteria certification vulnerablility
assessment. Static code analysis has been run and found the following
error. Overlapping_buffer: The source buffer potentially overlaps
with the destination buffer, which results in undefined
behavior for "memcpy".
The change is to use memmove instead of memcpy.
Signed-off-by: Nigel Croxon <ncroxon@redhat.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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Now that I am using white-space mode in Emacs I can see all of this,
and I don't like it :-)
Signed-off-by: NeilBrown <neilb@suse.de>
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These are from:
http://gcc.gnu.org/svn/gcc/branches/cilkplus/include/sha1.h
and
http://gcc.gnu.org/svn/gcc/branches/cilkplus/libiberty/sha1.c
and hopefully avoid aliasing issues.
Signed-off-by: NeilBrown <neilb@suse.de>
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Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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When an array is created, if the homehost is know,
the superblock gets it, either in the uuid, (via sha1)
or in the name field.
Signed-off-by: Neil Brown <neilb@suse.de>
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