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The problem is that TSan still fails [1] is that ignorelist does not
work for static functions without asterisk:
// test.cpp
#include <thread>
bool flag = false;
// avoid mangling
extern "C" {
static void set_flag_impl()
{
flag = true;
}
void set_flag()
{
set_flag_impl();
}
void set_flag_if()
{
if (flag)
flag = false;
}
}
int main()
{
std::thread t1([]{ set_flag(); });
std::thread t2([]{ set_flag_if(); });
t1.join();
t2.join();
return 0;
}
// ignorelist
[thread]
fun:set_flag_impl
$ clang++ -g -fno-omit-frame-pointer -fsanitize=thread -fsanitize-ignorelist=ignorelist -o test test.cpp && ./test
SUMMARY: ThreadSanitizer: data race /tmp/test-tsan-ignorelist/test.cpp:19:9 in set_flag_if
$ sed -i 's/set_flag_impl/*set_flag_impl*/' ignorelist
$ clang++ -g -fno-omit-frame-pointer -fsanitize=thread -fsanitize-ignorelist=ignorelist -o test test.cpp && ./test
OK
But, note that ignorelist is tricky, and will not work for
functions with __always_inline__ attribute for example.
P.S. set_flag_impl also has brackets in the output (i.e.
set_flag_impl()), while ther eis brackets for rd_avg_calc on CI [1].
[1]: https://s3.amazonaws.com/clickhouse-test-reports/63039/84bebc534ba7cf6e9dbfc1d91e8350939a84f87c/integration_tests__tsan__[6_6]//home/ubuntu/actions-runner/_work/_temp/test/output_dir/integration_run_parallel4_0.log
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
22 lines
886 B
Plaintext
22 lines
886 B
Plaintext
# Note, this file is ignorelist file [1] not suppressions [2].
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#
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# [1]: https://clang.llvm.org/docs/SanitizerSpecialCaseList.html
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# [2]: https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html#runtime-suppressions
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#
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# See also [3] for all UBSan checks.
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#
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# [3]: https://github.com/llvm-mirror/compiler-rt/blob/master/lib/ubsan/ubsan_checks.inc
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#
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# Caveats for generic entry "fun":
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# - does not work for __attribute__((__always_inline__))
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# - requires asterisk at the beginning *and* end for static functions
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#
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[undefined]
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# Some value is outside the range of representable values of type 'long' on user-provided data inside boost::geometry - ignore.
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src:*/Functions/pointInPolygon.cpp
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src:*/contrib/boost/boost/geometry/*
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# We don't want to receive sanitizer alerts from third-party libraries during fuzzing
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src:*/contrib/contrib/protobuf/*
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src:*/contrib/libprotobuf-mutator/*
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