* [goldwynr:buffered-iomap 42/93] include/linux/build_bug.h:78:41: error: static assertion failed: "min(pos + write_bytes, isize) signedness error, fix types or consider umin() before min_t()"
@ 2024-02-10 22:13 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-02-10 22:13 UTC (permalink / raw
To: Goldwyn Rodrigues; +Cc: oe-kbuild-all
tree: https://github.com/goldwynr/linux buffered-iomap
head: 7cb60beb922ba5589e5aea0181ced3e235df7435
commit: 91d068db5f009b134b22693519136ac8ffa8bb72 [42/93] btrfs: lock until inode size while performing writes
config: m68k-defconfig (https://download.01.org/0day-ci/archive/20240211/202402110641.Wo5oJSul-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240211/202402110641.Wo5oJSul-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/202402110641.Wo5oJSul-lkp@intel.com/
Note: the goldwynr/buffered-iomap HEAD 7cb60beb922ba5589e5aea0181ced3e235df7435 builds fine.
It only hurts bisectability.
All errors (new ones prefixed by >>):
In file included from include/linux/container_of.h:5,
from include/linux/list.h:5,
from include/linux/wait.h:7,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from fs/btrfs/file.c:6:
fs/btrfs/file.c: In function 'lock_and_cleanup_extent_if_need':
>> include/linux/build_bug.h:78:41: error: static assertion failed: "min(pos + write_bytes, isize) signedness error, fix types or consider umin() before min_t()"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/linux/minmax.h:51:9: note: in expansion of macro 'static_assert'
51 | static_assert(__types_ok(x, y), \
| ^~~~~~~~~~~~~
include/linux/minmax.h:58:17: note: in expansion of macro '__cmp_once'
58 | __cmp_once(op, x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y)))
| ^~~~~~~~~~
include/linux/minmax.h:85:25: note: in expansion of macro '__careful_cmp'
85 | #define min(x, y) __careful_cmp(min, x, y)
| ^~~~~~~~~~~~~
fs/btrfs/file.c:1004:20: note: in expansion of macro 'min'
1004 | last_pos = min(pos + write_bytes, isize);
| ^~~
vim +78 include/linux/build_bug.h
bc6245e5efd70c Ian Abbott 2017-07-10 60
6bab69c65013be Rasmus Villemoes 2019-03-07 61 /**
6bab69c65013be Rasmus Villemoes 2019-03-07 62 * static_assert - check integer constant expression at build time
6bab69c65013be Rasmus Villemoes 2019-03-07 63 *
6bab69c65013be Rasmus Villemoes 2019-03-07 64 * static_assert() is a wrapper for the C11 _Static_assert, with a
6bab69c65013be Rasmus Villemoes 2019-03-07 65 * little macro magic to make the message optional (defaulting to the
6bab69c65013be Rasmus Villemoes 2019-03-07 66 * stringification of the tested expression).
6bab69c65013be Rasmus Villemoes 2019-03-07 67 *
6bab69c65013be Rasmus Villemoes 2019-03-07 68 * Contrary to BUILD_BUG_ON(), static_assert() can be used at global
6bab69c65013be Rasmus Villemoes 2019-03-07 69 * scope, but requires the expression to be an integer constant
6bab69c65013be Rasmus Villemoes 2019-03-07 70 * expression (i.e., it is not enough that __builtin_constant_p() is
6bab69c65013be Rasmus Villemoes 2019-03-07 71 * true for expr).
6bab69c65013be Rasmus Villemoes 2019-03-07 72 *
6bab69c65013be Rasmus Villemoes 2019-03-07 73 * Also note that BUILD_BUG_ON() fails the build if the condition is
6bab69c65013be Rasmus Villemoes 2019-03-07 74 * true, while static_assert() fails the build if the expression is
6bab69c65013be Rasmus Villemoes 2019-03-07 75 * false.
6bab69c65013be Rasmus Villemoes 2019-03-07 76 */
6bab69c65013be Rasmus Villemoes 2019-03-07 77 #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
6bab69c65013be Rasmus Villemoes 2019-03-07 @78 #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
6bab69c65013be Rasmus Villemoes 2019-03-07 79
07a368b3f55a79 Maxim Levitsky 2022-10-25 80
:::::: The code at line 78 was first introduced by commit
:::::: 6bab69c65013bed5fce9f101a64a84d0385b3946 build_bug.h: add wrapper for _Static_assert
:::::: TO: Rasmus Villemoes <linux@rasmusvillemoes.dk>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2024-02-10 22:14 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-02-10 22:13 [goldwynr:buffered-iomap 42/93] include/linux/build_bug.h:78:41: error: static assertion failed: "min(pos + write_bytes, isize) signedness error, fix types or consider umin() before min_t()" kernel test robot
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.