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- From ca831f29f8f25c97182e726429b38c0802200c8f Mon Sep 17 00:00:00 2001
- From: Xiongwei Song <sxwjean@gmail.com>
- Date: Fri, 14 Jan 2022 14:07:24 -0800
- Subject: mm: page_alloc: fix building error on -Werror=array-compare
- Arthur Marsh reported we would hit the error below when building kernel
- with gcc-12:
- CC mm/page_alloc.o
- mm/page_alloc.c: In function `mem_init_print_info':
- mm/page_alloc.c:8173:27: error: comparison between two arrays [-Werror=array-compare]
- 8173 | if (start <= pos && pos < end && size > adj) \
- |
- In C++20, the comparision between arrays should be warned.
- Link: https://lkml.kernel.org/r/20211125130928.32465-1-sxwjean@me.com
- Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
- Reported-by: Arthur Marsh <arthur.marsh@internode.on.net>
- Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
- Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Upstream: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca831f29f8f25c97182e726429b38c0802200c8f
- Signed-off-by: Kilian Zinnecker <kilian.zinnecker@mail.de>
- ---
- mm/page_alloc.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
- diff --git a/mm/page_alloc.c b/mm/page_alloc.c
- index 806f317c2e7e2..c4ef450ac4428 100644
- --- a/mm/page_alloc.c
- +++ b/mm/page_alloc.c
- @@ -8228,7 +8228,7 @@ void __init mem_init_print_info(void)
- */
- #define adj_init_size(start, end, size, pos, adj) \
- do { \
- - if (start <= pos && pos < end && size > adj) \
- + if (&start[0] <= &pos[0] && &pos[0] < &end[0] && size > adj) \
- size -= adj; \
- } while (0)
-
- --
- cgit
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