Fuzzer: Segfault on interface index out of range

[veripoolbot]

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Author Name: Eric Rippey
Original Redmine Issue: 1588 from https://www.veripool.org

Original Assignee: Wilson Snyder (@wsnyder)

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Running the attached testcase with:

verilator_bin --lint-only 6.sv

on version:

Verilator 4.020 devel rev v4.020-56-gbcb766b

Produces:

%Error: 6.sv:15: Can't find definition of 'ifs__Viftop__BRA__1__KET__' in dotted signal: '.ifs__Viftop[1]'
                : ... In instance ifs__Viftop[1]
     .b(ifs[0])
      ^
         ... Known scopes under 'ifs__Viftop[1]': ifs[-1], ifs[0], m0
Segmentation fault (core dumped)

It also seems like the diagnostic could be a little bit more direct about what the user is doing wrong.

[veripoolbot]

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Original Redmine Comment
Author Name: Wilson Snyder (@wsnyder)
Original Date: 2019-11-05T02:21:05Z

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Fixed in git and __DOT cleaned up.