cxgb3/l2t: Fix undefined behaviour

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commit 7649773293 upstream.

The use of zero-sized array causes undefined behaviour when it is not
the last member in a structure. As it happens to be in this case.

Also, the current code makes use of a language extension to the C90
standard, but the preferred mechanism to declare variable-length
types such as this one is a flexible array member, 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. Which is beneficial
to cultivate a high-quality code.

Fixes: e48f129c2f ("[SCSI] cxgb3i: convert cdev->l2opt to use rcu to prevent NULL dereference")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

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Gustavo A. R. Silva 2019-03-29 10:27:26 -05:00 • committed by Ben Hutchings

parent 1e073f27b4

commit 49187c9dbc

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/chelsio/cxgb3/l2t.h

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