Revision 091901841af285f963ea80cd18d616fd0350ddbc authored by Peter Maydell on 16 October 2018, 17:25:03 UTC, committed by Kevin Wolf on 05 November 2018, 14:09:54 UTC
Taking the address of a field in a packed struct is a bad idea, because
it might not be actually aligned enough for that pointer type (and
thus cause a crash on dereference on some host architectures). Newer
versions of clang warn about this. Avoid the bug by not using the
"modify in place" byte swapping functions.

There are a few places where the in-place swap function is
used on something other than a packed struct field; we convert
those anyway, for consistency.

Patch produced with scripts/coccinelle/inplace-byteswaps.cocci.

There are other places where we take the address of a packed member
in this file for other purposes than passing it to a byteswap
function (all the calls to qemu_uuid_*()); we leave those for now.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1 parent 1229e46
History
File Mode Size
Makefile.objs -rw-r--r-- 797 bytes
baum.c -rw-r--r-- 22.2 KB
char-console.c -rw-r--r-- 1.9 KB
char-fd.c -rw-r--r-- 4.6 KB
char-fe.c -rw-r--r-- 8.8 KB
char-file.c -rw-r--r-- 3.9 KB
char-io.c -rw-r--r-- 4.3 KB
char-mux.c -rw-r--r-- 11.3 KB
char-null.c -rw-r--r-- 1.8 KB
char-parallel.c -rw-r--r-- 8.7 KB
char-pipe.c -rw-r--r-- 5.5 KB
char-pty.c -rw-r--r-- 8.2 KB
char-ringbuf.c -rw-r--r-- 6.8 KB
char-serial.c -rw-r--r-- 8.3 KB
char-socket.c -rw-r--r-- 37.1 KB
char-stdio.c -rw-r--r-- 4.5 KB
char-udp.c -rw-r--r-- 7.0 KB
char-win-stdio.c -rw-r--r-- 7.7 KB
char-win.c -rw-r--r-- 6.3 KB
char.c -rw-r--r-- 30.1 KB
msmouse.c -rw-r--r-- 5.4 KB
spice.c -rw-r--r-- 10.9 KB
testdev.c -rw-r--r-- 3.5 KB
trace-events -rw-r--r-- 611 bytes
wctablet.c -rw-r--r-- 10.3 KB

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