Re: [RFC 03/13] objtool: Disassemble code with libopcodes instead of running objdump

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "only suspicious fbc files changed"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20250606153440.865808-4-alexandre.chartre@oracle.com>
References: <20250606153440.865808-4-alexandre.chartre@oracle.com>
TO: Alexandre Chartre <alexandre.chartre@oracle.com>

Hi Alexandre,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.15 next-20250606]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Alexandre-Chartre/objtool-Move-disassembly-functions-to-a-separated-file/20250606-233948
base:   linus/master
patch link:    https://lore.kernel.org/r/20250606153440.865808-4-alexandre.chartre%40oracle.com
patch subject: [RFC 03/13] objtool: Disassemble code with libopcodes instead of running objdump
:::::: branch date: 15 hours ago
:::::: commit date: 15 hours ago
config: powerpc-allnoconfig (https://download.01.org/0day-ci/archive/20250607/202506071438.NpC5O1aA-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250607/202506071438.NpC5O1aA-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202506071438.NpC5O1aA-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   arch/powerpc/decode.c: In function 'arch_reloc_size':
>> arch/powerpc/decode.c:131:5: warning: declaration of 'arch_disas_info_init' shadows a global declaration [-Wshadow]
     131 | int arch_disas_info_init(struct disassemble_info *dinfo)
         |     ^~~~~~~~~~~~~~~~~~~~
   In file included from tools/objtool/include/objtool/check.h:11,
                    from arch/powerpc/decode.c:5:
   tools/objtool/include/objtool/arch.h:107:5: note: shadowed declaration is here
     107 | int arch_disas_info_init(struct disassemble_info *dinfo);
         |     ^~~~~~~~~~~~~~~~~~~~
>> arch/powerpc/decode.c:131:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
     131 | int arch_disas_info_init(struct disassemble_info *dinfo)
         | ^~~
>> arch/powerpc/decode.c:136:1: error: expected declaration or statement at end of input
     136 | }
         | ^
   arch/powerpc/decode.c: At top level:
>> arch/powerpc/decode.c:131:5: warning: 'arch_disas_info_init' defined but not used [-Wunused-function]
     131 | int arch_disas_info_init(struct disassemble_info *dinfo)
         |     ^~~~~~~~~~~~~~~~~~~~
   make[6]: *** [tools/build/Makefile.build:86: tools/objtool/arch/powerpc/decode.o] Error 1
   In file included from disas.c:12:
   tools/include/tools/dis-asm-compat.h:10:6: error: redeclaration of 'enum disassembler_style'
      10 | enum disassembler_style {DISASSEMBLER_STYLE_NOT_EMPTY};
         |      ^~~~~~~~~~~~~~~~~~
   In file included from tools/objtool/include/objtool/arch.h:10,
                    from disas.c:6:
   /usr/include/dis-asm.h:53:6: note: originally defined here
      53 | enum disassembler_style
         |      ^~~~~~~~~~~~~~~~~~
   tools/include/tools/dis-asm-compat.h: In function 'init_disassemble_info_compat':
   tools/include/tools/dis-asm-compat.h:50:9: error: too few arguments to function 'init_disassemble_info'
      50 |         init_disassemble_info(info, stream,
         |         ^~~~~~~~~~~~~~~~~~~~~
   /usr/include/dis-asm.h:480:13: note: declared here
     480 | extern void init_disassemble_info (struct disassemble_info *dinfo, void *stream,
         |             ^~~~~~~~~~~~~~~~~~~~~
   make[5]: *** [tools/build/Makefile.build:86: tools/objtool/disas.o] Error 1
   make[6]: Target '__build' not remade because of errors.
   make[5]: *** [tools/build/Makefile.build:142: arch/powerpc] Error 2
   make[5]: Target '__build' not remade because of errors.
   make[4]: *** [Makefile:65: tools/objtool/objtool-in.o] Error 2
   make[4]: Target 'all' not remade because of errors.
   make[3]: *** [Makefile:73: objtool] Error 2
   make[2]: *** [Makefile:1448: tools/objtool] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.

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