linux/drivers/staging/wlan-ng
Gustavo A. R. Silva 5979afa2c4 staging: Replace zero-length array with flexible-array member
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][2],
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
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200220132908.GA30501@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-23 19:18:54 +01:00
..
cfg80211.c staging: wlan-ng: fix exit return when sme->key_idx >= NUM_WEPKEYS 2019-10-14 15:40:08 +02:00
hfa384x_usb.c staging: wlan-ng: fix compilation for USB debugging 2019-10-26 20:46:43 +02:00
hfa384x.h staging: Replace zero-length array with flexible-array member 2020-02-23 19:18:54 +01:00
Kconfig staging/wlan-ng: add CRC32 dependency in Kconfig 2019-12-10 10:56:54 +01:00
Makefile
p80211conv.c
p80211conv.h
p80211hdr.h
p80211ioctl.h
p80211metadef.h
p80211metastruct.h
p80211mgmt.h
p80211msg.h
p80211netdev.c netdev: pass the stuck queue to the timeout handler 2019-12-12 21:38:57 -08:00
p80211netdev.h
p80211req.c
p80211req.h
p80211types.h staging: Replace zero-length array with flexible-array member 2020-02-23 19:18:54 +01:00
p80211wep.c staging: wlan-ng: p80211wep.c: use lib/crc32 2019-10-07 12:32:43 +02:00
prism2fw.c staging: wlan-ng: prism2fw.c: Fix "Possible unnecessary 'out of memory' message" checkpatch.pl warning" 2019-01-07 08:56:07 +01:00
prism2mgmt.c staging: wlan-ng: ensure error return is actually returned 2020-01-15 13:11:41 +01:00
prism2mgmt.h
prism2mib.c staging: wlan-ng: Remove function prism2mib_excludeunencrypted() 2019-08-02 13:55:38 +02:00
prism2sta.c staging: wlan-ng: use "%*pE" for serial number 2019-07-22 07:34:12 +02:00
prism2usb.c staging: wlan-ng: remove unnecessary casts from prism2usb.c 2019-10-26 20:46:41 +02:00
README

TODO:
	- checkpatch.pl cleanups
	- sparse warnings
	- move to use the in-kernel wireless stack

Please send any patches or complaints about this driver to Greg
Kroah-Hartman <greg@kroah.com> and don't bother the upstream wireless
kernel developers about it, they want nothing to do with it.