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opentelemetrytracer: Allow sampler to set variant type span attributes#20

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samohte merged 3 commits intoallow-variant-otel-argument-typefrom
int-allow-variant-arg-types
Mar 4, 2024
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opentelemetrytracer: Allow sampler to set variant type span attributes#20
samohte merged 3 commits intoallow-variant-otel-argument-typefrom
int-allow-variant-arg-types

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@samohte samohte commented Mar 1, 2024

Commit Message: Allow sampler to set variant type span attributes
Additional Description: The opentelemetry sampler interface allows a sampler to add span attributes. The current Envoy implementation has the limitation that only string attributes are allowed.
In #32333 a dependency to Otel C++ API was added. This enables us to use the same type for attributes as Otel C++ SDK does.
Risk Level:
Testing: Unit, Integration, Manual
Docs Changes: N/A
Release Notes: Allow sampler to set variant type span attributes
Platform Specific Features: N/A
[Optional Runtime guard:] N/A
[Optional Fixes #Issue]
[Optional Fixes commit #PR or SHA]
[Optional Deprecated:]
[Optional API Considerations:]

samohte added 2 commits March 1, 2024 06:57
Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>
Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>
@samohte samohte requested a review from joaopgrassi March 1, 2024 09:50
@samohte samohte marked this pull request as ready for review March 1, 2024 09:50
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LGTM! :shipit:

Comment thread source/extensions/tracers/opentelemetry/tracer.cc Outdated
Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>
@samohte samohte merged this pull request into allow-variant-otel-argument-type Mar 4, 2024
@samohte samohte deleted the int-allow-variant-arg-types branch March 4, 2024 09:08
samohte added a commit that referenced this pull request Mar 4, 2024
#20)

 Allow sampler to set variant type span attributes.

Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>
samohte added a commit that referenced this pull request Mar 7, 2024
envoyproxy#32681)

* opentelemetrytracer: Allow sampler to set variant type span attributes (#20)

 Allow sampler to set variant type span attributes.

Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>

* added changelog entry

Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>

* introduce type alias OtelAttibutes, use local variable

Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>

* fix typo in type alias

Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>

---------

Signed-off-by: thomas.ebner <thomas.ebner@dynatrace.com>
joaopgrassi pushed a commit that referenced this pull request Sep 24, 2024
Fixing asan failures:
```
==16==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x323ecbe in malloc /local/mnt/workspace/bcain_clang_hu-bcain-lv_22036/final/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:69:3
    #1 0xa58a194 in operator new(unsigned long) (/b/f/w/bazel-out/k8-dbg/bin/test/extensions/geoip_providers/maxmind/geoip_provider_test.runfiles/envoy/test/extensions/geoip_providers/maxmind/geoip_provider_test+0xa58a194)
    #2 0x3348d04 in void std::__1::vector<std::__1::function<absl::lts_20230802::Status (unsigned int)>, std::__1::allocator<std::__1::function<absl::lts_20230802::Status (unsigned int)> > >::__emplace_back_slow_path<std::__1::function<absl::lts_20230802::Status (unsigned int)> >(std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) /opt/llvm/bin/../include/c++/v1/vector:1558:49
    #3 0x3348883 in std::__1::function<absl::lts_20230802::Status (unsigned int)>& std::__1::vector<std::__1::function<absl::lts_20230802::Status (unsigned int)>, std::__1::allocator<std::__1::function<absl::lts_20230802::Status (unsigned int)> > >::emplace_back<std::__1::function<absl::lts_20230802::Status (unsigned int)> >(std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) /opt/llvm/bin/../include/c++/v1/vector:1580:9
    #4 0x3348554 in Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)::operator()(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>) const /proc/self/cwd/test/extensions/geoip_providers/maxmind/geoip_provider_test.cc:118:35
    #5 0x334830e in decltype(static_cast<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)&>(fp)(static_cast<std::__1::basic_string_view<char, std::__1::char_traits<char> >>(fp0), static_cast<unsigned int>(fp0), static_cast<std::__1::function<absl::lts_20230802::Status (unsigned int)>>(fp0))) std::__1::__invoke<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)&, std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> >(Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)&, std::__1::basic_string_view<char, std::__1::char_traits<char> >&&, unsigned int&&, std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) /opt/llvm/bin/../include/c++/v1/type_traits:3640:23
    #6 0x33481c5 in absl::lts_20230802::Status std::__1::__invoke_void_return_wrapper<absl::lts_20230802::Status, false>::__call<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)&, std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> >(Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)&, std::__1::basic_string_view<char, std::__1::char_traits<char> >&&, unsigned int&&, std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) /opt/llvm/bin/../include/c++/v1/__functional/invoke.h:30:16
    #7 0x334819d in std::__1::__function::__alloc_func<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>), std::__1::allocator<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>, absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::operator()(std::__1::basic_string_view<char, std::__1::char_traits<char> >&&, unsigned int&&, std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) /opt/llvm/bin/../include/c++/v1/__functional/function.h:180:16
    #8 0x3347993 in std::__1::__function::__func<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>), std::__1::allocator<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderTestBase::initializeProvider(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::optional<Envoy::ConditionalInitializer>&)::'lambda'()::operator()() const::'lambda'(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>, absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::operator()(std::__1::basic_string_view<char, std::__1::char_traits<char> >&&, unsigned int&&, std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) /opt/llvm/bin/../include/c++/v1/__functional/function.h:354:12
    #9 0x71758dd in std::__1::__function::__value_func<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::operator()(std::__1::basic_string_view<char, std::__1::char_traits<char> >&&, unsigned int&&, std::__1::function<absl::lts_20230802::Status (unsigned int)>&&) const /opt/llvm/bin/../include/c++/v1/__functional/function.h:507:16
    #10 0x7175738 in std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::operator()(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>) const /opt/llvm/bin/../include/c++/v1/__functional/function.h:1184:12
    #11 0x71754e8 in decltype(std::forward<std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&>(fp)(std::get<0ul>(std::forward<std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> > >(fp0)), std::get<1ul>(std::forward<std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> > >(fp0)), std::get<2ul>(std::forward<std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> > >(fp0)))) testing::internal::ApplyImpl<std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&, std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> >, 0ul, 1ul, 2ul>(std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&, std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> >&&, testing::internal::IndexSequence<0ul, 1ul, 2ul>) /proc/self/cwd/external/com_google_googletest/googlemock/include/gmock/internal/gmock-internal-utils.h:420:10
    #12 0x7175395 in decltype(ApplyImpl(std::forward<std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&>(fp), std::forward<std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> > >(fp0), (testing::internal::MakeIndexSequence<std::tuple_size<std::__1::remove_reference<std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> > >::type>::value>)())) testing::internal::Apply<std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&, std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> > >(std::__1::function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&, std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> >&&) /proc/self/cwd/external/com_google_googletest/googlemock/include/gmock/internal/gmock-internal-utils.h:429:10
    #13 0x7174d47 in testing::Action<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::Perform(std::__1::tuple<std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)> >) const /proc/self/cwd/external/com_google_googletest/googlemock/include/gmock/gmock-actions.h:497:12
    #14 0x7175afd in testing::internal::ActionResultHolder<absl::lts_20230802::Status>* testing::internal::ActionResultHolder<absl::lts_20230802::Status>::PerformAction<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>(testing::Action<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)> const&, testing::internal::Function<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::ArgumentTuple&&) /proc/self/cwd/external/com_google_googletest/googlemock/include/gmock/gmock-spec-builders.h:1402:24
    #15 0x7173651 in testing::internal::FunctionMocker<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::UntypedPerformAction(void const*, void*) const /proc/self/cwd/external/com_google_googletest/googlemock/include/gmock/gmock-spec-builders.h:1556:12
    #16 0xa3e9535 in testing::internal::UntypedFunctionMockerBase::UntypedInvokeWith(void*) /proc/self/cwd/external/com_google_googletest/googlemock/src/gmock-spec-builders.cc:452:24
    #17 0x333e5b2 in testing::internal::FunctionMocker<absl::lts_20230802::Status (std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>)>::Invoke(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>) /proc/self/cwd/external/com_google_googletest/googlemock/include/gmock/gmock-spec-builders.h:1593:15
    #18 0x333e24c in Envoy::Filesystem::MockWatcher::addWatch(std::__1::basic_string_view<char, std::__1::char_traits<char> >, unsigned int, std::__1::function<absl::lts_20230802::Status (unsigned int)>) /proc/self/cwd/./test/mocks/filesystem/mocks.h:78:3
    #19 0x3405db9 in decltype(static_cast<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProvider::GeoipProvider(Envoy::Event::Dispatcher&, Envoy::Api::Api&, std::__1::shared_ptr<Envoy::Singleton::Instance>, std::__1::shared_ptr<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderConfig>)::$_0&>(fp)()) std::__1::__invoke<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProvider::GeoipProvider(Envoy::Event::Dispatcher&, Envoy::Api::Api&, std::__1::shared_ptr<Envoy::Singleton::Instance>, std::__1::shared_ptr<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderConfig>)::$_0&>(Envoy::Extensions::GeoipProviders::Maxmind::GeoipProvider::GeoipProvider(Envoy::Event::Dispatcher&, Envoy::Api::Api&, std::__1::shared_ptr<Envoy::Singleton::Instance>, std::__1::shared_ptr<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderConfig>)::$_0&) /proc/self/cwd/source/extensions/geoip_providers/maxmind/geoip_provider.cc:126:11
    #20 0x3404a63 in std::__1::__function::__func<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProvider::GeoipProvider(Envoy::Event::Dispatcher&, Envoy::Api::Api&, std::__1::shared_ptr<Envoy::Singleton::Instance>, std::__1::shared_ptr<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderConfig>)::$_0, std::__1::allocator<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProvider::GeoipProvider(Envoy::Event::Dispatcher&, Envoy::Api::Api&, std::__1::shared_ptr<Envoy::Singleton::Instance>, std::__1::shared_ptr<Envoy::Extensions::GeoipProviders::Maxmind::GeoipProviderConfig>)::$_0>, void ()>::operator()() /opt/llvm/bin/../include/c++/v1/__functional/invoke.h:61:9
    #21 0x34f0239 in std::__1::__function::__value_func<void ()>::operator()() const /opt/llvm/bin/../include/c++/v1/__functional/function.h:507:16
    #22 0x91dbf37 in Envoy::Thread::PosixThreadFactory::createPthread(Envoy::Thread::ThreadHandle*)::$_6::__invoke(void*) /opt/llvm/bin/../include/c++/v1/__functional/function.h:1184:12
    #23 0x7fb0ecf9f608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x8608) (BuildId: 0c044ba611aeeeaebb8374e660061f341ebc0bac)
```

Commit Message:
Additional Description:
Risk Level:
Testing:
Docs Changes:
Release Notes:
Platform Specific Features:
[Optional Runtime guard:]
Fixes envoyproxy#35829
[Optional Fixes commit #PR or SHA]
[Optional Deprecated:]
[Optional [API
Considerations](https://github.com/envoyproxy/envoy/blob/main/api/review_checklist.md):]

Signed-off-by: Kateryna Nezdolii <kateryna.nezdolii@gmail.com>
joaopgrassi pushed a commit that referenced this pull request Jul 10, 2025
When trying to build and run fuzzers that may throw an exception (e.g.,
`bazel build //test/common/http:path_utility_fuzz_test
--config=asan-fuzzer`) the following error occurs:
```
$ bazel-bin/test/common/http/path_utility_fuzz_test /tmp/corpus
INFO: found LLVMFuzzerCustomMutator (0x555ec3b27058). Disabling -len_control by default.
INFO: Running with entropic power schedule (0xFF, 100).
INFO: Seed: 3031084950
INFO: Loaded 1 modules   (2436830 inline 8-bit counters): 2436830 [0x555ecf049c40, 0x555ecf29cb1e),
INFO: Loaded 1 PC tables (2436830 PCs): 2436830 [0x555ecf29cb20,0x555ed17cb900),
INFO:        5 files found in /tmp/corpus
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 4096 bytes
INFO: seed corpus: files: 5 min: 91b max: 332b total: 1208b rss: 357Mb
libc++abi: terminating due to uncaught exception of type Envoy::EnvoyException
==3072858== ERROR: libFuzzer: deadly signal
    #0 0x555ec3ae0911 in __sanitizer_print_stack_trace (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0xa49f911)
    #1 0x555ec39e56b8 in fuzzer::PrintStackTrace() cxa_noexception.cpp
    #2 0x555ec39c8a53 in fuzzer::Fuzzer::CrashCallback() cxa_noexception.cpp
    #3 0x7f5506763e1f  (/lib/x86_64-linux-gnu/libc.so.6+0x3fe1f) (BuildId: ea119b374e0f8f858c82ad03a9542414f9ea1c8c)
    #4 0x7f55067b7e5b in __pthread_kill_implementation nptl/pthread_kill.c:43:17
    #5 0x7f5506763d81 in raise signal/../sysdeps/posix/raise.c:26:13
    #6 0x7f550674c4ef in abort stdlib/abort.c:79:7
    #7 0x555ecc751905 in abort_message abort_message.cpp
    #8 0x555ecc751ae2 in demangling_terminate_handler() cxa_default_handlers.cpp
    #9 0x555ecc7519a2 in std::__terminate(void (*)()) cxa_handlers.cpp
    #10 0x555ecc750fd5 in __cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) cxa_exception.cpp
    #11 0x555ecc750fbf in __cxa_throw (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0x1310ffbf)
    #12 0x555ec97f5a1f in Envoy::ProtoExceptionUtil::throwProtoValidationException(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>> const&, google::protobuf::Message const&) (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0x101b4a1f)
    #13 0x555ec3b87a1c in void Envoy::MessageUtil::validate<test::common::http::PathUtilityTestCase>(test::common::http::PathUtilityTestCase const&, Envoy::ProtobufMessage::ValidationVisitor&, bool) (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0xa546a1c)
    #14 0x555ec3b277be in LLVMFuzzerTestOneInput (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0xa4e67be)
    #15 0x555ec39c9f60 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) cxa_noexception.cpp
    #16 0x555ec39c9785 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) cxa_noexception.cpp
    #17 0x555ec39cb712 in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile>>&) cxa_noexception.cpp
    #18 0x555ec39cba02 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile>>&) cxa_noexception.cpp
    #19 0x555ec39b9eeb in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) cxa_noexception.cpp
    #20 0x555ec39e5f12 in main (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0xa3a4f12)
    #21 0x7f550674dd67 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #22 0x7f550674de24 in __libc_start_main csu/../csu/libc-start.c:360:3
    #23 0x555ec39ac720 in _start (/usr/local/google/home/adip/.cache/bazel/_bazel_adip/8e88866af51670ff1222d99304421e7c/execroot/envoy/bazel-out/k8-fastbuild/bin/test/common/http/path_utility_fuzz_test+0xa36b720)

NOTE: libFuzzer has rudimentary signal handlers.
      Combine libFuzzer with AddressSanitizer or similar for better crash reports.
SUMMARY: libFuzzer: deadly signal
```

This PR adds a linking flag to allow the fuzzers to properly handle
exceptions.

Signed-off-by: Adi Suissa-Peleg <adip@google.com>
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