Re: [sv-bc] Possible errata in LRM 3.1a section 3.16, bit stream casting

From: Greg Jaxon <Greg.Jaxon@synopsys.com>
Date: Mon Aug 30 2004 - 10:25:48 PDT

Yes, this appears to be an errata. But the word "unpacked" is correct.
The restriction should read:

"If both source_t and dest_t are fixed size types of different sizes and
either type is unpacked, the cast generates a compile-time error."

Greg Jaxon

Stuart Sutherland wrote:
> LRM 3.1a Section 3.16 has the following paragraph (*** added for emphasis):
>
> "If both source_t and dest_t are fixed sized ***unpacked*** types of
> different sizes then a cast generates a compile-time error."
>
> The examples that follow all contain an int type as either the source or
> destination. Wouldn't the int type be considered a packed type? Yet the
> paragraph specifically states the rules are for unpacked types. Either the
> examples are wrong, or the word "unpacked" in the description of the rule is
> wrong.
>
> Stu
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Stuart Sutherland Sutherland HDL Inc.
> stuart@sutherland-hdl.com 22805 SW 92nd Place
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Received on Mon Aug 30 10:25:52 2004

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