qemu/contrib
Philippe Mathieu-Daudé f7795e4096 misc: Replace zero-length arrays with flexible array member (automatic)
Description copied from Linux kernel commit from Gustavo A. R. Silva
(see [3]):

--v-- description start --v--

  The current codebase makes use of the zero-length array language
  extension to the C90 standard, but the preferred mechanism to
  declare variable-length types such as these ones is a flexible
  array member [1], introduced in C99:

  struct foo {
      int stuff;
      struct boo array[];
  };

  By making use of the mechanism above, we will get a compiler
  warning in case the flexible array does not occur last in the
  structure, which will help us prevent some kind of undefined
  behavior bugs from being unadvertenly introduced [2] to the
  Linux codebase from now on.

--^-- description end --^--

Do the similar housekeeping in the QEMU codebase (which uses
C99 since commit 7be41675f7).

All these instances of code were found with the help of the
following Coccinelle script:

  @@
  identifier s, m, a;
  type t, T;
  @@
   struct s {
      ...
      t m;
  -   T a[0];
  +   T a[];
  };
  @@
  identifier s, m, a;
  type t, T;
  @@
   struct s {
      ...
      t m;
  -   T a[0];
  +   T a[];
   } QEMU_PACKED;

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=76497732932f
[3] https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=17642a2fbd2c1

Inspired-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-16 22:07:42 +01:00
..
elf2dmp contrib/elf2dmp: Build download.o with CURL_CFLAGS 2019-07-22 14:07:39 +01:00
gitdm contrib/gitdm: add China Mobile to the domain map 2019-10-27 19:16:30 +00:00
ivshmem-client Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
ivshmem-server ivshmem-server: Terminate also on SIGINT 2019-11-12 10:37:20 +01:00
libvhost-user misc: Replace zero-length arrays with flexible array member (automatic) 2020-03-16 22:07:42 +01:00
rdmacm-mux contrib/rdmacm-mux: Remove superfluous semicolon 2020-02-18 20:20:49 +01:00
systemd contrib: add systemd unit files 2017-12-20 22:29:26 +01:00
vhost-user-blk Implement backend program convention command for vhost-user-blk 2020-01-05 07:03:03 -05:00
vhost-user-gpu vhost-user-gpu: Drop trailing json comma 2019-12-20 06:56:37 +01:00
vhost-user-input libvhost-user-glib: fix VugDev main fd cleanup 2020-02-27 03:46:10 -05:00
vhost-user-scsi vhost-user-scsi: fix printf format warning 2019-12-17 19:32:47 +01:00