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| author | Flavio Cruz <flaviocruz@gmail.com> | 2024-07-18 22:25:03 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-07-18 23:30:34 +0200 |
| commit | 85c1d9860d563d8c43d95d41c51d0cbd68f93c9a (patch) | |
| tree | a7ab43b7414208615d4662ca91e2d24180ab65b6 /write.h | |
| parent | 98e07c497c9d866c0342696918a020b3f0303405 (diff) | |
| download | mig-85c1d9860d563d8c43d95d41c51d0cbd68f93c9a.tar.gz mig-85c1d9860d563d8c43d95d41c51d0cbd68f93c9a.tar.bz2 mig-85c1d9860d563d8c43d95d41c51d0cbd68f93c9a.zip | |
Suffix complex_alignof with U to hint the compiler that it is always unsigned
I have noticed a problem when compiling rumpkernel with the new
thread_get_name:
gnumachUser.c: In function 'thread_get_name':
gnumachUser.c:1791:37: error: comparison of integer expressions of different signedness: 'unsigned int' and 'int' [-Werror=sign-compare]
1791 | if (mig_unlikely (msgh_size != 36 + ((OutP->nameType.msgt_number + 3) & ~3)))
| ^~
gnumachUser.c:25:47: note: in definition of macro 'mig_unlikely'
25 | #define mig_unlikely(X) __builtin_expect (!! (X), 0)
| ^
cc1: all warnings being treated as errors
This ensures that the compiler won't cast ~3 to int since the code will
be written as:
1791 | if (mig_unlikely (msgh_size != 36 + ((OutP->nameType.msgt_number + 3) & ~3U)))
Message-ID: <hwbytulqiyx3ga3grvgpkgiekriqrogfv4lqasi74hqpeft7im@ipoz6pu44veo>
Diffstat (limited to 'write.h')
0 files changed, 0 insertions, 0 deletions