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C++ resolves certain kinds of tricky function calls via a remote procedure call that sends an SMTP mail to the ISO committee, and waits for a reply. (It's compile time though, no biggie.)

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False. SMTP is not mandated by the standard.

In practice, gcc and clang implement it so it's portable /s

But technically it's UB, so you shouldn't use it.

For the curious, this exact series of comments _is_ mandated by the standard and therefore be reliably located in every thread that involves C/C++.

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