> Is it agreed that empty unpacked array concatenations were to be allowed? I don't know about "agreed", but there's absolutely no doubt in my mind that it should be legal and should denote an array with no elements. I don't see any difficulty here. UACs are valid only as the source in an assignment-like context. If the target is a variable-sized array, then it can have a zero-length array assigned to it. If the target is a fixed-size array, then the zero-length source UAC must inevitably be an error since its size is sure to be different from that of any possible fixed-size array. I've raised Mantis 2831. There still needs to be a normative footnote in Annex A pointing out that {} is legal only as a UAC.... unless there's a desire to permit empty concatenations. I can imagine the latter might, just possibly, be useful in the same way that null array slices are useful in VHDL. -- Jonathan Bromley Consultant Doulos - Developing Design Know-how VHDL * Verilog * SystemVerilog * SystemC * PSL * Perl * Tcl/Tk * Project Services Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, Hampshire, BH24 1AW, UK Tel: + 44 (0)1425 471223 Email: jonathan.bromley@doulos.com Fax: +44 (0)1425 471573 http://www.doulos.com -------------------------------------------------------------------------------- Doulos Ltd is registered in England and Wales with company no. 3723454 Its registered office is 4 Brackley Close, Bournemouth International Airport, Christchurch, BH23 6SE, UK. This message may contain personal views which are not the views of Doulos, unless specifically stated. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.Received on Tue Jul 28 13:36:51 2009
This archive was generated by hypermail 2.1.8 : Tue Jul 28 2009 - 13:37:50 PDT