linux-kernel - linux-next: build warning after merge of the kbuild tree

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Date:   Wed, 4 Oct 2023 10:13:56 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build warning after merge of the kbuild tree

Hi all,

After merging the kbuild tree, today's linux-next build (powerpc
ppc64_defconfig) produced this warning:

In file included from scripts/mod/modpost.c:23:
scripts/mod/modpost.c: In function 'section_rela':
scripts/mod/modpost.h:66:24: warning: passing argument 2 of '__endian' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   66 |         __endian(&(x), &(__x), sizeof(__x));                    \
      |                        ^~~~~~
scripts/mod/modpost.c:1437:28: note: in expansion of macro 'TO_NATIVE'
 1437 |                 r_offset = TO_NATIVE(rela->r_offset);
      |                            ^~~~~~~~~
scripts/mod/modpost.h:56:52: note: expected 'void *' but argument is of type 'const Elf64_Addr *' {aka 'const long unsigned int *'}
   56 | static inline void __endian(const void *src, void *dest, unsigned int size)
      |                                              ~~~~~~^~~~
scripts/mod/modpost.h:66:24: warning: passing argument 2 of '__endian' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   66 |         __endian(&(x), &(__x), sizeof(__x));                    \
      |                        ^~~~~~
scripts/mod/modpost.c:1440:25: note: in expansion of macro 'TO_NATIVE'
 1440 |                 taddr = TO_NATIVE(rela->r_addend);
      |                         ^~~~~~~~~
scripts/mod/modpost.h:56:52: note: expected 'void *' but argument is of type 'const Elf64_Sxword *' {aka 'const long int *'}
   56 | static inline void __endian(const void *src, void *dest, unsigned int size)
      |                                              ~~~~~~^~~~
scripts/mod/modpost.c: In function 'section_rel':
scripts/mod/modpost.h:66:24: warning: passing argument 2 of '__endian' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   66 |         __endian(&(x), &(__x), sizeof(__x));                    \
      |                        ^~~~~~
scripts/mod/modpost.c:1472:28: note: in expansion of macro 'TO_NATIVE'
 1472 |                 r_offset = TO_NATIVE(rel->r_offset);
      |                            ^~~~~~~~~
scripts/mod/modpost.h:56:52: note: expected 'void *' but argument is of type 'const Elf64_Addr *' {aka 'const long unsigned int *'}
   56 | static inline void __endian(const void *src, void *dest, unsigned int size)
      |                                              ~~~~~~^~~~

Introduced by commit

  367df0e19c67 ("modpost: factor out the common boilerplate of section_rel(a)")

-- 
Cheers,
Stephen Rothwell

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