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Incorrect results with partially out-of-bounds part select (re-opened) #1008

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veripoolbot opened this issue Nov 26, 2015 · 1 comment
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@veripoolbot veripoolbot commented Nov 26, 2015


Author Name: Clifford Wolf (@cliffordwolf)
Original Redmine Issue: 1008 from https://www.veripool.org


Sorry, I don't know how to re-open a closed issue.. (can I even do that?)

A year ago I reported issue #823: Incorrect results with partially out-of-bounds part select:

http://www.veripool.org/issues/823-Verilator-Incorrect-results-with-partially-out-of-bounds-part-select

This ticked has been closed as "Fixed in git towards 3.865".

However, with current git head of verilator (commit 373a68e) I can still reproduce the problem, using exactly the test case that I posted in issue 823:

http://svn.clifford.at/handicraft/2014/verilatortest/test020.v

http://svn.clifford.at/handicraft/2014/verilatortest/test020_tb.v

http://svn.clifford.at/handicraft/2014/verilatortest/test020.cc

http://svn.clifford.at/handicraft/2014/verilatortest/test020.sh

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@veripoolbot veripoolbot commented Dec 6, 2015


Original Redmine Comment
Author Name: Wilson Snyder (@wsnyder)
Original Date: 2015-12-06T01:01:02Z


Sorry, the test case I extracted and fixed had the opposite bit ordering. I've started on a patch, but it makes a mess of other tests, so more work is needed. Stay tuned.

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