[PATCH] Improve LinuxThreads compatibility in rfork()

[Kostik Belousov]

On Mon, Jul 11, 2011 at 04:50:44PM +0200, Petr Salinger wrote:
> >RFLINUXPTH was used by the linuxthreads port, that was popular in the
> >time of FreeBSD 4.x and may be 5.x to run mysql. I will object against
> >this breakage.
> 
> Do I understand correctly that API/ABI backward compatibility with 
> previous FreeBSD releases w.r.t RFLINUXPTH is needed ?
Yes, I think so.

> 
> The 1st patch satisfies this. I agree that SIGCHLD part
> is not easily readable.
The SIGCHLD part is ugly. This is why I am asking about possible ways
to overcome this.
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