linux-kernel - linux-next: build warnings after merge of the kspp-gustavo tree

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Message-ID: <20231122144814.649823ac@canb.auug.org.au>
Date:   Wed, 22 Nov 2023 14:48:14 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build warnings after merge of the kspp-gustavo tree

Hi all,

After merging the kspp-gustavo tree, today's linux-next build (sparc64
defconfig) produced these warnings:

mm/mempolicy.c: In function 'mpol_parse_str':
mm/mempolicy.c:3007:26: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3007 |                 *--flags = '=';
      |                 ~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:3007:26: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3007 |                 *--flags = '=';
      |                 ~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:3007:26: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3007 |                 *--flags = '=';
      |                 ~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:3007:26: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3007 |                 *--flags = '=';
      |                 ~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:3005:29: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3005 |                 *--nodelist = ':';
      |                 ~~~~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:3007:26: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3007 |                 *--flags = '=';
      |                 ~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:3005:29: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3005 |                 *--nodelist = ':';
      |                 ~~~~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
mm/mempolicy.c:3007:26: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 3007 |                 *--flags = '=';
      |                 ~~~~~~~~~^~~~~
mm/mempolicy.c:2890:26: note: destination object 'str' of size [0, 9223372036854775807]
 2890 | int mpol_parse_str(char *str, struct mempolicy **mpol)
      |                    ~~~~~~^~~

This is using gcc v11.1.0

-- 
Cheers,
Stephen Rothwell

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