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Fix $left/$right for C-style unpacked arrays 

Unpacked array dimensions that are specified with only a single size value
(C-style unpacked arrays) have a $left of 0 and a $right of size - 1. E.g.
`x[10]` is equivalent to `x[0:9]`. This is defined in the LRM (1800-2017)
section 7.4.2 ("Unpacked arrays").

Currently it is implemented the other way around. There are a few contexts
where this distinction matters. For example array to array assignments,
which are supposed to be done left-to-right.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This commit is contained in:
Lars-Peter Clausen 2022-10-11 10:45:34 +02:00
parent 2a15489e9d
commit 3c4d1bbe4e
1 changed files with 2 additions and 2 deletions
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netmisc.cc
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@ -1099,8 +1099,8 @@ bool evaluate_range(Design*des, NetScope*scope, const LineInfo*li,
if (!dimension_ok) {
// bail out
} else if (index_l > 0) {
index_l = index_l - 1;
index_r = 0;
index_r = index_l - 1;
index_l = 0;
} else {
cerr << range.first->get_fileline() << ": error: "
"Dimension size must be greater than zero." << endl;