Re: [Iverilog-devel] system function as task (feature request).

[Martin W. <mai...@ma...>]

Cary R. wrote:
> We have a feature request to add the ability to call a system
> function as a task. This only really makes sense for the
> functions that return an error code (e.g. $rewind, etc.), but
> to be consistent this would likely apply to all the system
> functions.
> 
> My first reaction is this should not be allowed, but I wanted
> to get input from others and to see if SystemVerilog added
> this capability. If we were to add this I think Icarus should
> issue a warning that could not be disabled. The original
> poster said ModelSim supports this syntax. Do other
> simulators support it as well?
> 
NC-Verilog doesn't allow this (even with the +sv option).

> I can find nothing in the standard that would imply this is
> acceptable behavior.
> 
The formal syntax definition seems pretty explicit that this is
not allowed.

If you did decide to support this, I'd suggest using a -g option
to enable it. But I'm not convinced it's worth the effort, or
that it's a good idea to encourage users to write non-portable
code.

Martin