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author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2020-04-07 05:10:00 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-07 19:43:42 +0200 |
commit | c6e2ac3b476b458f9bd2069d85b95ca4634ce680 (patch) | |
tree | f8225e10a69bae399c9c7f7b5685b02080029b8f /COPYING | |
parent | lib/bch.c: replace zero-length array with flexible-array member (diff) | |
download | linux-c6e2ac3b476b458f9bd2069d85b95ca4634ce680.tar.xz linux-c6e2ac3b476b458f9bd2069d85b95ca4634ce680.zip |
lib/ts_bm.c: 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: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200211205620.GA24694@embeddedor
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions