[Bug libelf/23884] New: error: ‘__elf32_msize’ specifies less restrictive attribute than its target ‘elf32_fsize’: ‘const’ [-Werror=missing-attributes]

["mliska at suse dot cz" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23884

            Bug ID: 23884
           Summary: error: ‘__elf32_msize’ specifies less restrictive
                    attribute than its target ‘elf32_fsize’: ‘const’
                    [-Werror=missing-attributes]
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libelf
          Assignee: unassigned at sourceware dot org
          Reporter: mliska at suse dot cz
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

It's a new warning that comes with recent GCC 9:

$ make V=1
make --no-print-directory all-recursive
Making all in config
make[2]: Nothing to be done for 'all'.
Making all in m4
make[2]: Nothing to be done for 'all'.
Making all in lib
make[2]: Nothing to be done for 'all'.
Making all in libelf
gcc -D_GNU_SOURCE -DHAVE_CONFIG_H -DLOCALEDIR='"/usr/local/share/locale"' -I.
-I..  -I. -I. -I../lib -I..  -std=gnu99 -Wall -Wshadow -Wformat=2
-Wold-style-definition -Wstrict-prototypes -Wlogical-op -Wduplicated-cond
-Wnull-dereference -Wimplicit-fallthrough=5 -Werror -Wunused -Wextra
-Wstack-usage=262144    -D_FORTIFY_SOURCE=2 -g -O2 -MT elf32_fsize.o -MD -MP
-MF .deps/elf32_fsize.Tpo -c -o elf32_fsize.o elf32_fsize.c
In file included from ../config.h:134,
                 from elf32_fsize.c:31:
libelfP.h:47:30: error: ‘__elf32_msize’ specifies less restrictive attribute
than its target ‘elf32_fsize’: ‘const’ [-Werror=missing-attributes]
   47 | #define __elfw2_(Bits, Name) __elf##Bits##_##Name
      |                              ^~~~~
../lib/eu-config.h:60:26: note: in definition of macro ‘strong_alias’
   60 |   extern __typeof (name) aliasname __attribute__ ((alias (#name)));
      |                          ^~~~~~~~~
elf32_fsize.c:68:1: note: in expansion of macro ‘local_strong_alias’
   68 | local_strong_alias (elfw2(LIBELFBITS, fsize), __elfw2(LIBELFBITS,
msize))
      | ^~~~~~~~~~~~~~~~~~
libelfP.h:52:29: note: in expansion of macro ‘__elfw2_’
   52 | #define __elfw2(Bits, Name) __elfw2_(Bits, Name)
      |                             ^~~~~~~~
elf32_fsize.c:68:47: note: in expansion of macro ‘__elfw2’
   68 | local_strong_alias (elfw2(LIBELFBITS, fsize), __elfw2(LIBELFBITS,
msize))
      |                                               ^~~~~~~
In file included from elf32_fsize.c:35:
libelfP.h:48:28: note: ‘__elf32_msize’ target declared here
   48 | #define elfw2_(Bits, Name) elf##Bits##_##Name
      |                            ^~~
libelfP.h:53:27: note: in expansion of macro ‘elfw2_’
   53 | #define elfw2(Bits, Name) elfw2_(Bits, Name)
      |                           ^~~~~~
elf32_fsize.c:43:1: note: in expansion of macro ‘elfw2’
   43 | elfw2(LIBELFBITS, fsize) (Elf_Type type, size_t count, unsigned int
version)
      | ^~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:786: elf32_fsize.o] Error 1
make[1]: *** [Makefile:485: all-recursive] Error 1
make: *** [Makefile:401: all] Error 2

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