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DPI problem with > 32 bit but <= 64 bit args #423

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veripoolbot opened this issue Nov 29, 2011 · 2 comments
Closed

DPI problem with > 32 bit but <= 64 bit args #423

veripoolbot opened this issue Nov 29, 2011 · 2 comments
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resolution: fixed Closed; fixed

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Author Name: Chandan Egbert
Original Redmine Issue: 423 from https://www.veripool.org
Original Date: 2011-11-29
Original Assignee: Chandan Egbert

Verilator 3.830 generates code that causes a C++ syntax error. The following verilog code

module sub(value);
     parameter WIDTH = 40;

     output [WIDTH-1:0] value;

     reg [WIDTH-1:0] value;

     task set_value(input bit [WIDTH-1:0] v);
         value = v;
     endtask

     export "DPI-C" task set_value;
endmodule

fails with the following gcc error:

Vt_dpi_qw.cpp: In static member function 'static void Vt_dpi_qw::set_value(const svBitVecVal*)':
Vt_dpi_qw.cpp:100: error: invalid type argument of 'unary *'
Vt_dpi_qw.cpp:100: error: invalid type argument of 'unary *'

A test case (in the style of test_regress) and a patch to src/V3Task.cpp are attached.
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Original Redmine Comment
Author Name: Wilson Snyder (@wsnyder)
Original Date: 2011-11-29T02:16:09Z

So wonderful to get patches and tests!

Applied in git towards 3.831.

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Original Redmine Comment
Author Name: Wilson Snyder (@wsnyder)
Original Date: 2012-01-20T12:10:57Z

In 3.831.

@veripoolbot veripoolbot added the resolution: fixed Closed; fixed label Dec 22, 2019
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