[PATCH v2 4/8] Makefile: Disable readability-math-missing-parentheses clang-tidy check

With clang-tidy and LLVM 19: /home/sbrivio/passt/conf.c:1218:29: error: '*' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 1218 | const char *octet = str + 3 * i; | ^~~~~~ | ( ) /home/sbrivio/passt/ndp.c:285:18: error: '*' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 285 | .len = 1 + 2 * n, | ^~~~~~ | ( ) /home/sbrivio/passt/ndp.c:329:23: error: '%' has higher precedence than '-'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 329 | memset(ptr, 0, 8 - dns_s_len % 8); /* padding */ | ^~~~~~~~~~~~~~ | ( ) /home/sbrivio/passt/pcap.c:131:20: error: '*' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 131 | pcap_frame(iov + i * frame_parts, frame_parts, offset, &now); | ^~~~~~~~~~~~~~~~ | ( ) /home/sbrivio/passt/util.c:216:10: error: '/' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 216 | return (a->tv_nsec + 1000000000 - b->tv_nsec) / 1000 + | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ( ) /home/sbrivio/passt/util.c:217:10: error: '*' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 217 | (a->tv_sec - b->tv_sec - 1) * 1000000; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ( ) /home/sbrivio/passt/util.c:220:9: error: '/' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 220 | return (a->tv_nsec - b->tv_nsec) / 1000 + | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ( ) /home/sbrivio/passt/util.c:221:9: error: '*' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 221 | (a->tv_sec - b->tv_sec) * 1000000; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ( ) /home/sbrivio/passt/util.c:545:32: error: '/' has higher precedence than '+'; add parentheses to explicitly specify the order of operations [readability-math-missing-parentheses,-warnings-as-errors] 545 | return clone(fn, stack_area + stack_size / 2, flags, arg); | ^~~~~~~~~~~~~~~ | ( ) Just... no. Signed-off-by: Stefano Brivio Reviewed-by: David Gibson --- Makefile | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 2ebc81e..9afbb74 100644 --- a/Makefile +++ b/Makefile @@ -270,6 +270,12 @@ docs: README.md # makes sense when those defines form an enum-like set, but # weird for cases like standalone constants, and causes other # awkwardness for a bunch of cases we use +# +# - readability-math-missing-parentheses +# It's been a couple of centuries since multiplication has been granted +# precedence over addition in modern mathematical notation. Adding +# parentheses to reinforce that certainly won't improve readability. + clang-tidy: $(filter-out qrap.c,$(SRCS)) $(HEADERS) clang-tidy -checks=*,-modernize-*,\ @@ -296,7 +302,8 @@ clang-tidy: $(filter-out qrap.c,$(SRCS)) $(HEADERS) -concurrency-mt-unsafe,\ -readability-identifier-length,\ -misc-include-cleaner,\ - -cppcoreguidelines-macro-to-enum \ + -cppcoreguidelines-macro-to-enum,\ + -readability-math-missing-parentheses \ -config='{CheckOptions: [{key: bugprone-suspicious-string-compare.WarnOnImplicitComparison, value: "false"}]}' \ --warnings-as-errors=* $(filter-out qrap.c,$(SRCS)) -- $(filter-out -pie,$(FLAGS) $(CFLAGS) $(CPPFLAGS)) -DCLANG_TIDY_58992 -- 2.43.0