[gnutls-devel] GnuTLS | GnuTLS leaks file descriptors in child processes (#985)

[Development of GNU's TLS library]

Remi Denis-Courmont commented on a discussion: https://gitlab.com/gnutls/gnutls/-/issues/985#note_348103783

`fork()` is very limited in a multi-thread process. But that is a red herring:
The problem is not `fork()` here. The problem comes with `exec()` family functions, which leak file descriptors. If you call `exec()` directly, the problem exists all the same - it's just far more likely that `fork()` would occur first.

And if you don't like the idea of calling `fork()` then `exec()` in a multi-thread process, you can imagine using a function from the `posix_spawn()` instead: same causes, same problem.

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