Dimitry Andric
6f7651b9b6
When building with clang, disable -Wshift-count-negative and
-Wshift-count-overflow for sys/dev/ath/ath_hal/ah_regdomain.c, as it
gets multiple instances of the following warnings:
In file included from sys/dev/ath/ath_hal/ah_regdomain.c:99:
sys/dev/ath/ath_hal/ah_regdomain/ah_rd_domains.h:69:15: warning: shift count is negative [-Wshift-count-negative]
.chan11a = BM4(F1_4950_4980,
^~~~~~~~~~~~~~~~~
sys/dev/ath/ath_hal/ah_regdomain/ah_rd_domains.h:41:4: note: expanded from:
W1(_fa) | W1(_fb) | W1(_fc) | W1(_fd) }
^
sys/dev/ath/ath_hal/ah_regdomain/ah_rd_domains.h:34:45: note: expanded from:
(((_a) > 63 && (_a) < 128 ? (((uint64_t) 1)<<((_a)-64)) : (uint64_t) 0))
^ ~~~~~~~~~
and:
In file included from sys/dev/ath/ath_hal/ah_regdomain.c:99:
sys/dev/ath/ath_hal/ah_regdomain/ah_rd_domains.h:629:15: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
.chan11a = BM4(W2_5260_5320,
^~~~~~~~~~~~~~~~~
sys/dev/ath/ath_hal/ah_regdomain/ah_rd_domains.h:40:34: note: expanded from:
{ W0(_fa) | W0(_fb) | W0(_fc) | W0(_fd), \
^
sys/dev/ath/ath_hal/ah_regdomain/ah_rd_domains.h:32:44: note: expanded from:
(((_a) >= 0 && (_a) < 64 ? (((uint64_t) 1)<<(_a)) : (uint64_t) 0))
^ ~~~~
Both warnings are false positives, caused by LLVM PR 10030. For global
initializations, clang fails to detect that the branch of the ternary
operator causing the warning is dead.
MFC after: 1 week
2011-12-21 17:01:13 +00:00
..
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