[davejiang:cxl-ide 15/24] include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant

[davejiang:cxl-ide 15/24] include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant

[kernel test robot]

tree:   https://github.com/davejiang/linux.git cxl-ide
head:   5e3487a17fbf6e33d8ddd60444073ff0bc59b35e
commit: 6908950a8afc72c0e7e4131658994a3cd384c95c [15/24] pci: Add basic support for discovery of IDE on PCIe device
config: arm-randconfig-r046-20230812 (https://download.01.org/0day-ci/archive/20230812/202308121153.H9Q0iv6s-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230812/202308121153.H9Q0iv6s-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/oe-kbuild-all/202308121153.H9Q0iv6s-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from sound/pci/echoaudio/layla20.c:39:
   include/linux/pci.h:352:47: warning: 'enum pci_ide_stream_type' declared inside parameter list will not be visible outside of this definition or declaration
     352 |                                          enum pci_ide_stream_type type)
         |                                               ^~~~~~~~~~~~~~~~~~~
   include/linux/pci.h:352:67: error: parameter 3 ('type') has incomplete type
     352 |                                          enum pci_ide_stream_type type)
         |                                          ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
   include/linux/pci.h:350:19: error: function declaration isn't a prototype [-Werror=strict-prototypes]
     350 | static inline int pcie_ide_stream_create(struct pci_dev *pdev1,
         |                   ^~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/bits.h:21,
                    from include/linux/bitops.h:6,
                    from include/linux/log2.h:12,
                    from include/asm-generic/div64.h:55,
                    from arch/arm/include/asm/div64.h:107,
                    from include/linux/math.h:6,
                    from include/linux/delay.h:22,
                    from sound/pci/echoaudio/layla20.c:36:
>> include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant
      16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
         |                                                   ^
   include/linux/compiler.h:231:33: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
     231 | #define __must_be_array(a)      BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
         |                                 ^~~~~~~~~~~~~~~~~
   include/linux/kernel.h:56:59: note: in expansion of macro '__must_be_array'
      56 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
         |                                                           ^~~~~~~~~~~~~~~
   include/linux/moduleparam.h:517:20: note: in expansion of macro 'ARRAY_SIZE'
     517 |         = { .max = ARRAY_SIZE(array), .num = nump,                      \
         |                    ^~~~~~~~~~
   include/linux/moduleparam.h:501:9: note: in expansion of macro 'module_param_array_named'
     501 |         module_param_array_named(name, name, type, nump, perm)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   sound/pci/echoaudio/echoaudio.c:19:1: note: in expansion of macro 'module_param_array'
      19 | module_param_array(index, int, NULL, 0444);
         | ^~~~~~~~~~~~~~~~~~
   In file included from sound/pci/echoaudio/layla20.c:102:
   sound/pci/echoaudio/echoaudio.c:15:12: warning: 'index' defined but not used [-Wunused-variable]
      15 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
         |            ^~~~~
   cc1: some warnings being treated as errors


vim +16 include/linux/build_bug.h

bc6245e5efd70c Ian Abbott       2017-07-10   6  
bc6245e5efd70c Ian Abbott       2017-07-10   7  #ifdef __CHECKER__
bc6245e5efd70c Ian Abbott       2017-07-10   8  #define BUILD_BUG_ON_ZERO(e) (0)
bc6245e5efd70c Ian Abbott       2017-07-10   9  #else /* __CHECKER__ */
bc6245e5efd70c Ian Abbott       2017-07-10  10  /*
bc6245e5efd70c Ian Abbott       2017-07-10  11   * Force a compilation error if condition is true, but also produce a
8788994376d84d Rikard Falkeborn 2019-12-04  12   * result (of value 0 and type int), so the expression can be used
bc6245e5efd70c Ian Abbott       2017-07-10  13   * e.g. in a structure initializer (or where-ever else comma expressions
bc6245e5efd70c Ian Abbott       2017-07-10  14   * aren't permitted).
bc6245e5efd70c Ian Abbott       2017-07-10  15   */
8788994376d84d Rikard Falkeborn 2019-12-04 @16  #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
527edbc18a70e7 Masahiro Yamada  2019-01-03  17  #endif /* __CHECKER__ */
527edbc18a70e7 Masahiro Yamada  2019-01-03  18  

:::::: The code at line 16 was first introduced by commit
:::::: 8788994376d84d627450fd0d67deb6a66ddf07d7 linux/build_bug.h: change type to int

:::::: TO: Rikard Falkeborn <rikard.falkeborn@gmail.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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