On Thu, Jul 10, 2025 at 3:45 PM Carlo Marcelo Arenas Belón via
GitGitGadget [off-list ref] wrote:

A future change will start using sigaction to setup a SIGCHLD signal
handler.

The current code uses signal(), which returns SIG_ERR (but doesn't
seem to set errno) so instruct sigaction() to do the same.

A new SA flag will be needed, so copy the one from Cygwinr; note that
the sigacgtion() implementation that is provided won't use it, so
its value is otherwise irrelevant.

s/Cygwinr/Cygwin/
s/sigacgtion/sigaction/

Signed-off-by: Carlo Marcelo Arenas Belón <redacted>