Hi Ville, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7ddd09fc4b745fb1d8942f95389583e08412e0cd commit: 7befe621ff81d8063c13d6452b04e6ebc92b22fd [3721/5337] drm/edid: Abstract away cea_edid_modes[] config: sparc64-randconfig-a001-20191230 (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 7befe621ff81d8063c13d6452b04e6ebc92b22fd # save the attached .config to linux build tree GCC_VERSION=7.5.0 make.cross ARCH=sparc64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/ioport.h:13:0, from include/linux/device.h:15, from include/linux/hdmi.h:28, from drivers/gpu/drm/drm_edid.c:31: drivers/gpu/drm/drm_edid.c: In function 'cea_mode_alternate_timings': _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_edid.c:3129:2: note: in expansion of macro 'BUILD_BUG_ON' BUILD_BUG_ON(cea_mode_for_vic(8)->vtotal != 262 || ^~~~~~~~~~~~ -- In file included from include/linux/ioport.h:13:0, from include/linux/device.h:15, from include/linux/hdmi.h:28, from drivers/gpu//drm/drm_edid.c:31: drivers/gpu//drm/drm_edid.c: In function 'cea_mode_alternate_timings': _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:331:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^~~~~~~~~~~~~~~~ drivers/gpu//drm/drm_edid.c:3129:2: note: in expansion of macro 'BUILD_BUG_ON' BUILD_BUG_ON(cea_mode_for_vic(8)->vtotal != 262 || ^~~~~~~~~~~~ vim +/__compiletime_assert_3136 +350 include/linux/compiler.h 9a8ab1c39970a4 Daniel Santos 2013-02-21 336 9a8ab1c39970a4 Daniel Santos 2013-02-21 337 #define _compiletime_assert(condition, msg, prefix, suffix) \ 9a8ab1c39970a4 Daniel Santos 2013-02-21 338 __compiletime_assert(condition, msg, prefix, suffix) 9a8ab1c39970a4 Daniel Santos 2013-02-21 339 9a8ab1c39970a4 Daniel Santos 2013-02-21 340 /** 9a8ab1c39970a4 Daniel Santos 2013-02-21 341 * compiletime_assert - break build and emit msg if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 342 * @condition: a compile-time constant condition to check 9a8ab1c39970a4 Daniel Santos 2013-02-21 343 * @msg: a message to emit if condition is false 9a8ab1c39970a4 Daniel Santos 2013-02-21 344 * 9a8ab1c39970a4 Daniel Santos 2013-02-21 345 * In tradition of POSIX assert, this macro will break the build if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 346 * supplied condition is *false*, emitting the supplied error message if the 9a8ab1c39970a4 Daniel Santos 2013-02-21 347 * compiler has support to do so. 9a8ab1c39970a4 Daniel Santos 2013-02-21 348 */ 9a8ab1c39970a4 Daniel Santos 2013-02-21 349 #define compiletime_assert(condition, msg) \ 9a8ab1c39970a4 Daniel Santos 2013-02-21 @350 _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) 9a8ab1c39970a4 Daniel Santos 2013-02-21 351 :::::: The code at line 350 was first introduced by commit :::::: 9a8ab1c39970a4938a72d94e6fd13be88a797590 bug.h, compiler.h: introduce compiletime_assert & BUILD_BUG_ON_MSG :::::: TO: Daniel Santos <daniel.santos(a)pobox.com&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation