Make sure the correct error is raised for EAI_SYSTEM resolver fail

In case of EAI_SYSTEM, getaddrinfo is supposed to set more detail in
errno; however, because we call getaddrinfo on a thread now, and errno
is threadlocal, that information is being lost. Instead, we just raise
whatever errno happens to be on the calling thread (which can be
something very confusing, like `ECHILD`).

Fix it by explicitly propagating errno back to the calling thread
through the getaddrinfo_arg structure.

[Bug #20198]

0 files changed, 0 insertions, 0 deletions