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authorGustavo A. R. Silva <gustavo@embeddedor.com>2020-02-12 02:20:09 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2020-02-14 15:08:49 +0300
commit3084ea9ea88906576d0bfc0d66cb1735045266c8 (patch)
treee3f6100c5550a98c55e9eb75c787ae0f37561485 /drivers/thunderbolt
parentc2a9fca17e4c021e526cc52b78e0f30105024b82 (diff)
downloadlinux-3084ea9ea88906576d0bfc0d66cb1735045266c8.tar.xz
thunderbolt: icm: 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 inadvertenly introduced[3] to the codebase from now on. 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 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/icm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index 13e88109742e..fbbe32ca1e69 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -114,7 +114,7 @@ struct icm_notification {
struct ep_name_entry {
u8 len;
u8 type;
- u8 data[0];
+ u8 data[];
};
#define EP_NAME_INTEL_VSS 0x10