Snippets for mvfst 2026.07.27.00 from Nix x86_64-linux

Sourced from https://hydra.nixos.org/log/72m6x101l4ygwn8724qa4pl6jfzrkhi6-mvfst-2026.07.27.00.drv.

• /build/source/quic/QuicException.cpp:134:1: warning: control reaches end of non-void function [-Wreturn-type]
    134 | }
        | ^
  

• /build/source/quic/common/udpsocket/FollyQuicAsyncUDPSocket.cpp:648:23: warning: 'follyOwnership' may be used uninitialized [-Wmaybe-uninitialized]
    648 |     follySocket_.setFD(folly::NetworkSocket::fromFd(fd), follyOwnership);
        |     ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• /build/source/quic/api/QuicBatchWriterFactory.cpp:83:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
     83 |       switch (dataPathType) {
        |       ^~~~~~
  

• /nix/store/7sh9061yj9yl20ndc00rqw4d0bd80m1j-gcc-15.3.0/include/c++/15.3.0/bits/shared_ptr_base.h:1529:7: warning: '((__vector(2) long unsigned int*)this)[6]' is used uninitialized [-Wuninitialized]
   1529 |       __shared_ptr(const __shared_ptr&) noexcept = default;
        |       ^~~~~~~~~~~~
  

• /build/source/quic/api/IoBufQuicBatch.cpp:142:45: warning: '*(quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::StorageBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::PayloadType*)((char*)&firstSocketErrno + offsetof(quic::detail::tiny::quic_tiny_opt_100300_bit_mem::Optional<int>,quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::TinyOptionalImpl<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::StorageBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::mStorage.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagStorage<int>::<unnamed>))' may be used uninitialized [-Wmaybe-uninitialized]
    142 |         ? fmt::format("{}, ", quic::errnoStr(firstSocketErrno.value()))
        |                               ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
  

• /nix/store/7sh9061yj9yl20ndc00rqw4d0bd80m1j-gcc-15.3.0/include/c++/15.3.0/bits/stl_algobase.h:239:7: warning: '*(const long unsigned int*)((char*)&maxReceiveTimestampsPerAck + offsetof(quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<long unsigned int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>,quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<long unsigned int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::TinyOptionalImpl<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::StorageBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::mStorage.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagStorage<long unsigned int>::<unnamed>))' may be used uninitialized [-Wmaybe-uninitialized]
    239 |       if (__b < __a)
        |       ^~
  

• /build/source/quic/api/QuicSocketLite.h:151:18: warning: 'virtual void quic::QuicSocketLite::ConnectionCallback::onConnectionEnd(quic::QuicError)' was hidden [-Woverloaded-virtual=]
    151 |     virtual void onConnectionEnd(QuicError /* error */) noexcept {}
        |                  ^~~~~~~~~~~~~~~
  

• /nix/store/7sh9061yj9yl20ndc00rqw4d0bd80m1j-gcc-15.3.0/include/c++/15.3.0/bits/exception_ptr.h:206:11: warning: '*(std::__exception_ptr::exception_ptr*)((char*)&<unnamed> + offsetof(folly::Try<folly::Optional<std::pair<std::unique_ptr<folly::IOBuf, std::default_delete<folly::IOBuf> >, std::chrono::duration<long int, std::ratio<1, 1> > > > >,folly::Try<folly::Optional<std::pair<std::unique_ptr<folly::IOBuf, std::default_delete<folly::IOBuf> >, std::chrono::duration<long int, std::ratio<1, 1> > > > >::<unnamed>.folly::detail::TryBase<folly::Optional<std::pair<std::unique_ptr<folly::IOBuf, std::default_delete<folly::IOBuf> >, std::chrono::duration<long int, std::ratio<1, 1> > > > >::<unnamed>)).std::__exception_ptr::exception_ptr::_M_exception_object' may be used uninitialized [-Wmaybe-uninitialized]
    206 |       if (_M_exception_object)
        |           ^~~~~~~~~~~~~~~~~~~
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:311:51: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
    311 |   WriteAckFrameState ackState = {.acks = ackBlocks};
        |                                                   ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:311:51: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:311:51: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:1244:51: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
   1244 |   WriteAckFrameState ackState = {.acks = ackBlocks};
        |                                                   ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:1244:51: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:1244:51: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:2877:51: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
   2877 |   WriteAckFrameState ackState = {.acks = ackBlocks};
        |                                                   ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:2877:51: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:2877:51: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:2915:45: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
   2915 |   WriteAckFrameState state{.acks = ackBlocks};
        |                                             ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:2915:45: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:2915:45: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3262:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3262 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3262:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3330:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3330 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3330:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3385:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3385 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3385:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3439:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3439 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3439:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3495:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3495 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3495:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3593:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3593 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3593:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3677:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3677 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3677:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3776:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3776 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3776:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3832:64: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
   3832 |       .acks = ackBlocks, .largestRecvdPacketInfo = std::nullopt};
        |                                                                ^
  

• /build/source/quic/codec/test/QuicWriteCodecTest.cpp:3832:64: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /nix/store/4cyqmf8rdfgyj9mry6pbcb97ji76af8j-gtest-1.17.0-dev/include/gtest/gtest.h:1476:1: warning: '*(const long unsigned int*)((char*)&dataLen + offsetof(quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<long unsigned int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>,quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<long unsigned int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::TinyOptionalImpl<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::StorageBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::mStorage.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagStorage<long unsigned int>::<unnamed>))' may be used uninitialized [-Wmaybe-uninitialized]
   1476 | GTEST_IMPL_CMP_HELPER_(LT, <)
        | ^
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:114:56: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
    114 |   WriteAckFrameState writeAckState = {.acks = ackBlocks};
        |                                                        ^
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:114:56: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:114:56: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:119:73: warning: missing initializer for member 'quic::WriteAckFrameMetaData::connTime' [-Wmissing-field-initializers]
    119 |       .ackDelayExponent = static_cast<uint8_t>(kDefaultAckDelayExponent)};
        |                                                                         ^
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:476:56: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
    476 |   WriteAckFrameState writeAckState = {.acks = ackBlocks};
        |                                                        ^
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:476:56: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:476:56: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/codec/test/QuicPacketRebuilderTest.cpp:480:73: warning: missing initializer for member 'quic::WriteAckFrameMetaData::connTime' [-Wmissing-field-initializers]
    480 |       .ackDelayExponent = static_cast<uint8_t>(kDefaultAckDelayExponent)};
        |                                                                         ^
  

• /build/source/quic/api/test/QuicPacketSchedulerTest.cpp:678:56: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
    678 |   WriteAckFrameState writeAckState = {.acks = ackBlocks};
        |                                                        ^
  

• /build/source/quic/api/test/QuicPacketSchedulerTest.cpp:678:56: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/api/test/QuicPacketSchedulerTest.cpp:678:56: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/api/test/QuicPacketSchedulerTest.cpp:682:73: warning: missing initializer for member 'quic::WriteAckFrameMetaData::connTime' [-Wmissing-field-initializers]
    682 |       .ackDelayExponent = static_cast<uint8_t>(kDefaultAckDelayExponent)};
        |                                                                         ^
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:124:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    124 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:135:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    135 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:150:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    150 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:161:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    161 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:178:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    178 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:188:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    188 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/common/udpsocket/test/QuicAsyncUDPSocketMock.h:198:19: warning: catching polymorphic type 'class std::exception' by value [-Wcatch-value=]
    198 |     } catch (std::exception) {
        |                   ^~~~~~~~~
  

• /build/source/quic/server/handshake/test/AppTokenTest.cpp:331:44: warning: conversion from 'unsigned int' to 'quic::ExtendedAckFeatureMaskType' {aka 'unsigned char'} changes value from '4294967285' to '245' [-Woverflow]
    331 |       std::numeric_limits<uint32_t>::max() - 10);
        |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
  

• /build/source/quic/server/test/QuicServerTest.cpp:1714:23: warning: '*(quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::StorageBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::PayloadType*)((char*)&dataLen + offsetof(quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<long unsigned int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>,quic::detail::tiny::quic_tiny_opt_100300_bit_mem::optional<long unsigned int, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::UseDefaultValue>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::TinyOptionalImpl<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveAssignmentBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::CopyConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::MoveConstructionBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator, true>::<unnamed>.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::StorageBase<quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::DecompositionForSeparateFlag<long unsigned int>, quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagManipulator>::mStorage.quic::detail::tiny::quic_tiny_opt_100300_bit_mem::impl::SeparateFlagStorage<long unsigned int>::<unnamed>))' may be used uninitialized [-Wmaybe-uninitialized]
   1714 |   writeStreamFrameData(builder, std::move(streamData), *dataLen);
        |   ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• /build/source/quic/common/third-party/expected.hpp:758:9: warning: '*(quic::ServerConnectionIdParams*)((char*)&<unnamed> + offsetof(nonstd::expected_lite::expected<quic::ServerConnectionIdParams, quic::QuicError>,nonstd::expected_lite::expected<quic::ServerConnectionIdParams, quic::QuicError>::contained.nonstd::expected_lite::detail::storage_t<quic::ServerConnectionIdParams, quic::QuicError, true, true>::<unnamed>.nonstd::expected_lite::detail::storage_t_impl<quic::ServerConnectionIdParams, quic::QuicError>::<unnamed>))' may be used uninitialized [-Wmaybe-uninitialized]
    758 |         new( std11::addressof(m_value) ) value_type( std::move( e ) );
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• /build/source/quic/common/third-party/optional.h:1116:9: warning: 'secret' is used uninitialized [-Wuninitialized]
   1116 |         GetPayload() = std::forward<T>(v);
        |         ^~~~~~~~~~
  

• /build/source/quic/server/test/QuicServerTransportTest.cpp:2316:51: warning: missing initializer for member 'quic::WriteAckFrameState::largestRecvdPacketInfo' [-Wmissing-field-initializers]
   2316 |   WriteAckFrameState writeAckState = {.acks = acks};
        |                                                   ^
  

• /build/source/quic/server/test/QuicServerTransportTest.cpp:2316:51: warning: missing initializer for member 'quic::WriteAckFrameState::lastRecvdPacketInfo' [-Wmissing-field-initializers]
  

• /build/source/quic/server/test/QuicServerTransportTest.cpp:2316:51: warning: missing initializer for member 'quic::WriteAckFrameState::recvdPacketInfos' [-Wmissing-field-initializers]
  

• /build/source/quic/server/test/QuicServerTransportTest.cpp:2320:73: warning: missing initializer for member 'quic::WriteAckFrameMetaData::connTime' [-Wmissing-field-initializers]
   2320 |       .ackDelayExponent = static_cast<uint8_t>(kDefaultAckDelayExponent)};
        |                                                                         ^
  

• /nix/store/p91f5x8mg279ma3948sp4di138cagv5m-fizz-2026.07.27.00-dev/include/fizz/protocol/Params.h:57:8: warning: 'w.fizz::AppWrite::flags' is used uninitialized [-Wuninitialized]
     57 | struct AppWrite : EventType<Event::AppWrite> {
        |        ^~~~~~~~