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https://gitee.com/bianbu-linux/linux-6.6
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45c21a0e5b
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]
sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.
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
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| .. | ||
| agn.h | ||
| calib.c | ||
| calib.h | ||
| commands.h | ||
| debugfs.c | ||
| dev.h | ||
| devices.c | ||
| led.c | ||
| led.h | ||
| lib.c | ||
| mac80211.c | ||
| main.c | ||
| Makefile | ||
| power.c | ||
| power.h | ||
| rs.c | ||
| rs.h | ||
| rx.c | ||
| rxon.c | ||
| scan.c | ||
| sta.c | ||
| tt.c | ||
| tt.h | ||
| tx.c | ||
| ucode.c | ||