Re: signal() vs sigaction()

[Roberto Ierusalimschy <roberto@...>]

> The code for lua.c includes signal.h and contains several references
> to signal(). Since I know nothing about this, I have consulted the
> manpage for signal(). It starts thus:
> 
>       The behavior of signal() varies across UNIX versions, and has also var‐
>        ied historically across different versions of Linux.   Avoid  its  use:
>        use sigaction(2) instead.  See Portability below.
> 
> Is there a good reason, maybe something to do with other systems, why
> the Lua source uses signal() rather than sigaction()?

signal is ISO C, sigaction is not.

-- Roberto