Messages in this thread | | | Subject | Re: include/linux/kernel.h:860:32: error: dereferencing pointer to incomplete type 'struct clock_event_device' | From | Ian Abbott <> | Date | Sun, 16 Jul 2017 14:50:20 +0100 |
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On 16/07/17 04:24, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 > commit: c7acec713d14c6ce8a20154f9dfda258d6bcad3b kernel.h: handle pointers to arrays better in container_of() > date: 3 days ago > config: ia64-allyesconfig (attached as .config) > compiler: ia64-linux-gcc (GCC) 6.2.0 > reproduce: > wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout c7acec713d14c6ce8a20154f9dfda258d6bcad3b > # save the attached .config to linux build tree > make.cross ARCH=ia64 > > All errors (new ones prefixed by >>): > > In file included from drivers/clocksource/timer-of.c:25:0: > drivers/clocksource/timer-of.h:35:28: error: field 'clkevt' has incomplete type > struct clock_event_device clkevt; > ^~~~~~ > In file included from include/linux/err.h:4:0, > from include/linux/clk.h:15, > from drivers/clocksource/timer-of.c:18: > drivers/clocksource/timer-of.h: In function 'to_timer_of': >>> include/linux/kernel.h:860:32: error: dereferencing pointer to incomplete type 'struct clock_event_device' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^~~~~~ > include/linux/compiler.h:517:19: note: in definition of macro '__compiletime_assert' > bool __cond = !(condition); \ > ^~~~~~~~~ > include/linux/compiler.h:537:2: note: in expansion of macro '_compiletime_assert' > _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) > ^~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:46:37: note: in expansion of macro 'compiletime_assert' > #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) > ^~~~~~~~~~~~~~~~~~ > include/linux/kernel.h:860:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^~~~~~~~~~~~~~~~ > include/linux/kernel.h:860:20: note: in expansion of macro '__same_type' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^~~~~~~~~~~ > drivers/clocksource/timer-of.h:44:9: note: in expansion of macro 'container_of' > return container_of(clkevt, struct timer_of, clkevt); > ^~~~~~~~~~~~ > -- > In file included from drivers//clocksource/timer-of.c:25:0: > drivers//clocksource/timer-of.h:35:28: error: field 'clkevt' has incomplete type > struct clock_event_device clkevt; > ^~~~~~ > In file included from include/linux/err.h:4:0, > from include/linux/clk.h:15, > from drivers//clocksource/timer-of.c:18: > drivers//clocksource/timer-of.h: In function 'to_timer_of': >>> include/linux/kernel.h:860:32: error: dereferencing pointer to incomplete type 'struct clock_event_device' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^~~~~~ > include/linux/compiler.h:517:19: note: in definition of macro '__compiletime_assert' > bool __cond = !(condition); \ > ^~~~~~~~~ > include/linux/compiler.h:537:2: note: in expansion of macro '_compiletime_assert' > _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) > ^~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:46:37: note: in expansion of macro 'compiletime_assert' > #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) > ^~~~~~~~~~~~~~~~~~ > include/linux/kernel.h:860:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^~~~~~~~~~~~~~~~ > include/linux/kernel.h:860:20: note: in expansion of macro '__same_type' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^~~~~~~~~~~ > drivers//clocksource/timer-of.h:44:9: note: in expansion of macro 'container_of' > return container_of(clkevt, struct timer_of, clkevt); > ^~~~~~~~~~~~ > > vim +860 include/linux/kernel.h > > 843 > 844 > 845 /* > 846 * swap - swap value of @a and @b > 847 */ > 848 #define swap(a, b) \ > 849 do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0) > 850 > 851 /** > 852 * container_of - cast a member of a structure out to the containing structure > 853 * @ptr: the pointer to the member. > 854 * @type: the type of the container struct this is embedded in. > 855 * @member: the name of the member within the struct. > 856 * > 857 */ > 858 #define container_of(ptr, type, member) ({ \ > 859 void *__mptr = (void *)(ptr); \ > > 860 BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > 861 !__same_type(*(ptr), void), \ > 862 "pointer type mismatch in container_of()"); \ > 863 ((type *)(__mptr - offsetof(type, member))); }) > 864 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation >
struct clock_event_device is only completely defined when CONFIG_GENERIC_CLOCKEVENTS is defined, which it isn't. But I'm confused as to why TIMER_OF getting selected by allyesconfig since it depends on GENERIC_CLOCKEVENTS.
-- -=( Ian Abbott @ MEV Ltd. E-mail: <abbotti@mev.co.uk> )=- -=( Web: http://www.mev.co.uk/ )=-
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