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This is #14151 by @tomyouyou re-submitted by me to provide some context and make more suites run.
The value returned by the function in question is eventually returned by
handle_call/3, whichsupports two types of responses: explicit via
gen_server:reply/2and "automatic" via a return value, where theFromvalue is implicitly used by the gen .This PR addresses a case where a
handle_call/3returns a{stop, Reason, Reply, NewState}, in which case the reply is sent by an OTP loop process beforegen_serverterminates. The reply will implicitly (for ahandle_call/3implementation reader) use the caller/Fromvalue, which in some cases can benone.