| Message ID | YxKO/jY1x0xTpl4r@work (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | 06919d226d01132c03d851966d4df3870fa1b55a |
| Headers | show |
| Series | [next] mm/memremap: Replace zero-length array with DECLARE_FLEX_ARRAY() helper | expand |
On Sat, Sep 03, 2022 at 12:17:18AM +0100, Gustavo A. R. Silva wrote: > 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 > Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org>
diff --git a/include/linux/memremap.h b/include/linux/memremap.h index c3b4cc84877b..ad3c38840194 100644 --- a/include/linux/memremap.h +++ b/include/linux/memremap.h @@ -135,7 +135,7 @@ struct dev_pagemap { int nr_range; union { struct range range; - struct range ranges[0]; + DECLARE_FLEX_ARRAY(struct range, ranges); }; };
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 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> --- include/linux/memremap.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)