Test targets compile failed for the [-Werror=uninitialized] compile option for non MSVC compiler(gcc11.2) about proxy HOT 5 CLOSED

I can confirm that the tests compile on GCC 11.1 (via Docker image gcc:11.1) with -DCMAKE_BUILD_TYPE=Debug but meet the same error as @zxhcho with -DCMAKE_BUILD_TYPE=Release.

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@zxhcho Thank you for your feedback! We already have pipelines running on Ubuntu (see Actions) that build the tests with GCC and did not notice any issue so far. As you mentioned MSVC, are you using GCC on Windows? If so, could you double check if CMake is properly configured with your compiler? If this issue persists and the environment is confirmed to be good, please feel free to let us know more about how your compiler and toolchains are configured so that we can repro it and help investigate further.

Ok, I build it on Ubuntu 22.04 with gcc-11.2 and Release version. When I switch to Debug, the error will not occur as @Shuenhoy

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@zxhcho Thank you for your feedback! We already have pipelines running on Ubuntu (see Actions) that build the tests with GCC and did not notice any issue so far. As you mentioned MSVC, are you using GCC on Windows? If so, could you double check if CMake is properly configured with your compiler? If this issue persists and the environment is confirmed to be good, please feel free to let us know more about how your compiler and toolchains are configured so that we can repro it and help investigate further.

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Currently self-move-assignment can result in reading *this when *this is destroyed, which is UB. I think we should perform the operations only if this != std::addressof(rhs).

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@frederick-vs-ja I did not notice it is a UB of proxy to move-assign to itself. Thank you for the investigation!

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