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mm/memremap: Replace zero-length array with DECLARE_FLEX_ARRAY() helper 

Zero-length arrays are deprecated and we are moving towards adopting
C99 flexible-array members, instead. So, replace zero-length array
declaration in struct dev_pagemap with the new DECLARE_FLEX_ARRAY()
helper macro.

This helper allows for a flexible-array member in a union.

Also, this addresses multiple warnings reported when building
with Clang-15 and -Wzero-length-array.

Link: https://github.com/KSPP/linux/issues/193
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2022-09-03 00:17:18 +01:00
parent 37e2b57078
commit 06919d226d
1 changed files with 1 additions and 1 deletions
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2
include/linux/memremap.h
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@ -135,7 +135,7 @@ struct dev_pagemap {
int nr_range;
union {
struct range range;
struct range ranges[0];
DECLARE_FLEX_ARRAY(struct range, ranges);
};
};