Icarus Verilog Bugs » History » Revision 7
Revision 6 (Sergey Smolov, 04/28/2018 11:49 AM) → Revision 7/8 (Sergey Smolov, 04/28/2018 06:29 PM)
h1. Icarus Verilog Bugs
The bugs are listed here can be reproduced on tests for Verilog Translator project (so called "ieee-tests").
# test_03_08_01_1.v
<pre>
test_03_08_01_1.v:25: syntax error
test_03_08_01_1.v:27: error: malformed statement
test_03_08_01_1.v:28: syntax error
test_03_08_01_1.v:33: error: malformed statement
test_03_08_01_1.v:34: syntax error
test_03_08_01_1.v:39: error: malformed statement
test_03_08_01_1.v:40: syntax error
</pre>
*Cause*: attributes for "case" statement branches like "(* full_case, parallel_case *)" are unsupported.
# test_03_08_01_2.v
<pre>
test_03_08_01_2.v:25: syntax error
test_03_08_01_2.v:27: error: malformed statement
test_03_08_01_2.v:28: syntax error
test_03_08_01_2.v:32: error: malformed statement
test_03_08_01_2.v:33: syntax error
</pre>
*Cause*: attributes for "case" statement branches like "(* full_case *)" are unsupported.
# test_03_08_01_6.v
<pre>
test_03_08_01_6.v:25: syntax error
test_03_08_01_6.v:25: error: malformed statement
</pre>
*Cause*: attributes for assignments like "a = b + (* mode = "cla" *) c;" are unsupported.
# test_03_08_01_7.v
<pre>
test_03_08_01_7.v:25: syntax error
test_03_08_01_7.v:25: error: malformed statement
</pre>
*Cause*: attributes for assignments like "a = add (* mode = "cla" *) (b, c);" are unsupported.
# test_03_08_01_8.v
<pre>
test_03_08_01_8.v:25: syntax error
test_03_08_01_8.v:25: error: malformed statement
</pre>
*Cause*: attributes for assignments like "a = b ? (* no_glitch *) c : d;" are unsupported.
# test_04_03_01_1.v
<pre>
test_04_03_01_1.v:24: sorry: trireg nets not supported.
</pre>
*Cause*: cannot parse "trireg (small) storeit;"
# test_04_03_02_1.v
<pre>
test_04_03_02_1.v:22: syntax error
test_04_03_02_1.v:22: error: invalid module item.
test_04_03_02_1.v:23: syntax error
test_04_03_02_1.v:23: error: invalid module item.
</pre>
*Cause*: cannot parse "tri1 scalared [63:0] bus64;"
# test_04_04_01_1.v
<pre>
test_04_04_01_1.v:22: sorry: trireg nets not supported.
test_04_04_01_1.v:23: sorry: trireg nets not supported.
test_04_04_01_1.v:25: syntax error
test_04_04_01_1.v:25: error: invalid module item.
</pre>
*Cause*: cannot parse "trireg a;"
# test_04_09_03_1_1.v
<pre>
test_04_09_03_1_1.v:26: sorry: only 1 dimensional arrays are currently supported.
test_04_09_03_1_1.v:28: sorry: only 1 dimensional arrays are currently supported.
</pre>
*Cause*: cannot parse "reg arrayb[7:0][0:255];"
# test_04_09_03_1_2.v
<pre>
test_04_09_03_1_2.v:26: sorry: only 1 dimensional arrays are currently supported.
test_04_09_03_1_2.v:28: sorry: only 1 dimensional arrays are currently supported.
</pre>
*Cause*: cannot parse "reg arrayb[7:0][0:255];"
# test_04_10_03_2.v
<pre>
test_04_10_03_2.v:23: syntax error
test_04_10_03_2.v:23: error: invalid module item.
test_04_10_03_2.v:24: syntax error
test_04_10_03_2.v:24: error: invalid module item.
</pre>
*Cause*: the "specparam" is unsupported.
# test_05_01_14_1.v
<pre>
test_05_01_14_1.v:30: error: Array b['sd3:'sd0] cannot be indexed by a range.
</pre>
*Cause*: cannot parse "result = {a, b[3:0], w, 3'b101};"
# test_05_02_01_4.v
<pre>
test_05_02_01_4.v:54: error: Unable to bind wire/reg/memory `x' in `test'
test_05_02_01_4.v:58: error: Unable to bind wire/reg/memory `z' in `test'
</pre>
*Cause*: cannot parse "addr = x;"
# test_05_02_02_2.v
<pre>
test_05_02_02_2.v:25: sorry: only 1 dimensional arrays are currently supported.
test_05_02_02_2.v:26: sorry: only 1 dimensional arrays are currently supported.
</pre>
*Cause*: cnnot parse "wire threed_array[0:255][0:255][0:7];"
# test_05_03_00_1.v
<pre>
test_05_03_00_1.v:25: warning: choosing typ expression.
</pre>
*Cause*: "parameter val = (32'd 50: 32'd 75: 32'd 100);"
# test_06_01_03_1.v
<pre>
test_06_01_03_1.v:24: sorry: net delays not supported.
</pre>
*Cause*: "wire #10 wireA;"
# test_07_14_01_1.v
<pre>
test_07_14_01_1.v:25: warning: choosing typ expression.
test_07_14_01_1.v:25: warning: choosing typ expression.
test_07_14_01_1.v:25: warning: choosing typ expression.
test_07_14_01_1.v:26: warning: choosing typ expression.
test_07_14_01_1.v:26: warning: choosing typ expression.
test_07_14_01_1.v:26: warning: choosing typ expression.
</pre>
*Cause*: "bufif0 #(5:7:9, 8:10:12, 15:18:21) b1 (io1, io2, dir);"
# test_07_14_01_2.v
<pre>
test_07_14_01_2.v:26: warning: choosing typ expression.
test_07_14_01_2.v:27: warning: choosing typ expression.
</pre>
*Cause*: " #(95:100:105) clk = 1;"
# test_07_14_02_2_1.v
<pre>
test_07_14_02_2_1.v:25: sorry: trireg nets not supported.
</pre>
*Cause*: "trireg ( large ) #(0,0,50) cap1;"
# test_07_14_02_2_2.v
<pre>
test_07_14_02_2_2.v:26: sorry: trireg nets not supported.
</pre>
*Cause*: "trireg ( large ) #(0,0,50) cap1;"
# test_08_06_00_1.v
<pre>
test_08_06_00_1.v:46: syntax error
test_08_06_00_1.v:46: error: syntax error in parameter value assignment list.
test_08_06_00_1.v:46: error: Invalid module instantiation
*Cause*: "d_edge_ff #p3 d_inst (q, clock, data);"
</pre>
# test_08_07_00_1.v
<pre>
test_08_07_00_1.v:30: syntax error
</pre>
*Cause*: " ? ?? 01 : ? : 1 ;"
# test_09_06_00_1.v
<pre>
test_09_06_00_1.v:27: syntax error
test_09_06_00_1.v:28: error: invalid module item.
test_09_06_00_1.v:29: syntax error
test_09_06_00_1.v:29: error: Invalid module instantiation
test_09_06_00_1.v:30: error: Invalid module instantiation
test_09_06_00_1.v:31: error: Invalid module instantiation
test_09_06_00_1.v:34: error: invalid module item.
test_09_06_00_1.v:35: syntax error
test_09_06_00_1.v:35: error: Invalid module instantiation
test_09_06_00_1.v:36: error: Invalid module instantiation
</pre>
*Cause*: "begin : mult"
# test_09_06_00_2.v
<pre>
test_09_06_00_2.v:23: syntax error
test_09_06_00_2.v:24: error: invalid module item.
test_09_06_00_2.v:25: syntax error
test_09_06_00_2.v:25: error: Invalid module instantiation
test_09_06_00_2.v:26: error: Invalid module instantiation
test_09_06_00_2.v:29: error: invalid module item.
test_09_06_00_2.v:30: syntax error
test_09_06_00_2.v:30: error: Invalid module instantiation
</pre>
*Cause*: "begin : count1s"
# test_09_06_00_3.v
<pre>
test_09_06_00_3.v:27: syntax error
test_09_06_00_3.v:27: Syntax in assignment statement l-value.
test_09_06_00_3.v:28: syntax error
test_09_06_00_3.v:28: Syntax in assignment statement l-value.
test_09_06_00_3.v:35: syntax error
test_09_06_00_3.v:35: error: Incomprehensible for loop.
</pre>
# test_09_07_01_2.v
<pre>
test_09_07_01_2.v:30: syntax error
test_09_07_01_2.v:30: Syntax in assignment statement l-value.
</pre>
# test_09_07_05_1.v
<pre>
test_09_07_05_1.v:31: syntax error
</pre>
# test_09_07_05_2.v
<pre>
test_09_07_05_2.v:30: error: port y already has a port declaration.
test_09_07_05_2.v:29: error: Port ``y'' has already been declared a port.
</pre>
# test_09_07_05_3.v
<pre>
test_09_07_05_3.v:32: internal error: NetProc::nex_input not implemented
test_09_07_05_3.v:31: error: Unable to elaborate:
@(test._s0) // test_09_07_05_3.v:32
{kid} = b[0:0];
</pre>
# test_09_07_05_4.v
<pre>
test_09_07_05_4.v:33: internal error: NetProc::nex_input not implemented
</pre>
*Cause*: "@* // equivalent # test_09_07_05_5.v
<pre>
test_09_07_05_5.v:32: error: y is not a valid l-value in test.
test_09_07_05_5.v:29: : y is declared here as wire.
test_09_07_05_5.v:33: error: y[a] is not a valid l-value in test.
test_09_07_05_5.v:29: : y[a] is declared here as wire.
test_09_07_05_5.v:31: warning: @* found no sensitivities so it will never trigger.
</pre>
# test_09_07_05_6.v
<pre>
test_09_07_05_6.v:35: error: Unable to @(c or d)
x = c ^ d;" bind wire/reg/memory `IDLE' in `test'
test_09_07_05_6.v:35: error: Unable to bind wire/reg/memory `READ' in `test'
test_09_07_05_6.v:36: error: Unable to bind wire/reg/memory `IDLE' in `test'
test_09_07_05_6.v:37: error: Unable to bind wire/reg/memory `READ' in `test'
test_09_07_05_6.v:37: error: Unable to bind wire/reg/memory `DLY' in `test'
test_09_07_05_6.v:38: error: Unable to bind wire/reg/memory `DLY' in `test'
test_09_07_05_6.v:38: error: Unable to bind wire/reg/memory `DONE' in `test'
</pre>
# test_09_07_06_1.v
<pre>
test_09_07_06_1.v:32: syntax error
test_09_07_06_1.v:33: error: invalid module item.
test_09_07_06_1.v:34: syntax error
test_09_07_06_1.v:34: error: invalid module item.
test_09_07_06_1.v:35: syntax error
</pre>
# test_09_07_07_1.v
<pre>
test_09_07_07_1.v:32: syntax error
</pre>
*Cause*: "repeat (-3) @ (posedge clk)" # test_09_07_07_3.v
<pre>
test_09_07_07_3.v:28: error: Unable to bind wire/reg/memory `clk' in `test'
test_09_07_07_3.v:33: error: Unable to bind wire/reg/memory `clk' in `test'
</pre>
# test_10_03_00_5.v test_09_07_07_4.v
<pre>
test_10_03_00_5.v:44: test_09_07_07_4.v:29: error: Unable to bind wire/reg/memory `clk' in `test'
test_09_07_07_4.v:34: error: Unable to bind wire/reg/memory `clk' in `test'
test_09_07_07_4.v:35: error: Unable to bind wire/reg/memory `clk' in `test'
test_09_07_07_4.v:36: error: Unable to bind wire/reg/memory `clk' in `test'
</pre>
# test_09_07_07_9.v
<pre>
test_09_07_07_9.v:31: error: Unable to bind wire/reg/memory `data' in `test'
</pre>
# test_09_08_01_3.v
<pre>
test_09_08_01_3.v:33: error: event <end_wave> not found.
</pre>
# test_09_08_02_1.v
<pre>
test_09_08_02_1.v:35: error: event <end_wave> not found.
</pre>
# test_09_08_04_1.v
<pre>
test_09_08_04_1.v:29: error: event <end_wave> not found.
</pre>
# test_09_08_04_2.v
<pre>
:0: error: Unable to bind wire/reg/memory `Aevent' in `test'
:0: error: Unable to bind wire/reg/memory `Bevent' in `test'
</pre>
# test_09_08_04_3.v
<pre>
:0: error: Unable to bind wire/reg/memory `enable_a' in `test'
:0: error: Unable to bind wire/reg/memory `enable_b' in `test'
</pre>
# test_09_09_01_1.v
<pre>
test_09_09_01_1.v:27: error: signal and parameter in 'test' have the same name 'size'.
</pre>
# test_09_09_02_1.v
<pre>
test_09_09_02_1.v:26: error: always statement does not have any delay.
test_09_09_02_1.v:26: : A runtime infinite loop will occur.
</pre>
# test_10_01_00_1.v
<pre>
test_10_01_00_1.v:29: syntax error
test_10_03_00_5.v:45: test_10_01_00_1.v:32: error: malformed statement
test_10_03_00_5.v:48: test_10_01_00_1.v:33: syntax error
test_10_03_00_5.v:49: error: malformed </pre>
# test_10_01_00_2.v
<pre>
test_10_01_00_2.v:27: syntax error
test_10_01_00_2.v:30: Syntax in assignment statement l-value.
test_10_01_00_2.v:31: syntax error
</pre>
*Cause*: "begin : posedge(clk)" # test_10_02_02_1_1.v
<pre>
test_10_02_02_1_1.v:31: error: Could not find variable ``foo1'' in ``test.my_task''
test_10_02_02_1_1.v:32: error: Could not find variable ``foo1'' in ``test.my_task''
test_10_02_02_1_1.v:33: error: Could not find variable ``foo1'' in ``test.my_task''
test_10_02_02_1_1.v:34: error: Could not find variable ``foo1'' in ``test.my_task''
test_10_02_02_1_1.v:35: error: Unable to bind wire/reg/memory `foo1' in `test.my_task'
test_10_02_02_1_1.v:36: error: Unable to bind wire/reg/memory `foo2' in `test.my_task'
test_10_02_02_1_1.v:37: error: Unable to bind wire/reg/memory `foo3' in `test.my_task'
</pre>
# test_12_02_00_1.v test_10_02_02_1_2.v
<pre>
test_12_02_00_1.v:57: test_10_02_02_1_2.v:27: error: Range expressions must Could not find variable ``foo1'' in ``test.my_task''
test_10_02_02_1_2.v:28: error: Could not find variable ``foo2'' in ``test.my_task''
test_10_02_02_1_2.v:29: error: Could not find variable ``foo3'' in ``test.my_task''
test_10_02_02_1_2.v:30: error: Unable to bind wire/reg/memory `foo1' in `test.my_task'
test_10_02_02_1_2.v:31: error: Unable to bind wire/reg/memory `foo2' in `test.my_task'
test_10_02_02_1_2.v:32: error: Unable to bind wire/reg/memory `foo3' in `test.my_task'
</pre>
# test_10_03_00_1.v
<pre>
test_10_03_00_1.v:25: syntax error
test_10_03_00_1.v:26: error: invalid module item.
test_10_03_00_1.v:27: syntax error
test_10_03_00_1.v:27: error: invalid module item.
test_10_03_00_1.v:28: syntax error
test_10_03_00_1.v:28: error: Invalid module instantiation
</pre>
# test_10_03_00_2.v
<pre>
test_10_03_00_2.v:27: syntax error
test_10_03_00_2.v:28: error: invalid module item.
test_10_03_00_2.v:30: syntax error
test_10_03_00_2.v:30: error: invalid module item.
test_10_03_00_2.v:31: syntax error
</pre>
# test_10_03_00_3.v
<pre>
test_10_03_00_3.v:30: error: Unable to bind wire/reg/memory `a' in `test.proc_a'
test_10_03_00_3.v:30: error: Unable to elaborate condition expression.
</pre>
# test_10_03_00_4.v
<pre>
test_10_03_00_4.v:34: syntax error
test_10_03_00_4.v:35: error: invalid module item.
test_10_03_00_4.v:35: syntax error
test_10_03_00_4.v:35: error: Invalid module instantiation
test_10_03_00_4.v:35: error: Invalid module instantiation
test_10_03_00_4.v:39: error: Invalid module instantiation
test_10_03_00_4.v:40: error: Invalid module instantiation
test_10_03_00_4.v:43: error: invalid module item.
test_10_03_00_4.v:44: syntax error
test_10_03_00_4.v:44: error: Invalid module instantiation
test_10_03_00_4.v:45: error: Invalid module instantiation
</pre>
# test_10_03_00_5.v
<pre>
test_10_03_00_5.v:28: syntax error
</pre>
# test_10_04_05_1.v
<pre>
test_10_04_05_1.v:27: sorry: constant user functions are not currently supported: clogb2().
</pre>
# test_11_05_00_1.v
<pre>
test_11_05_00_1.v:29: error: reg p; cannot be constant. driven by primitives or continuous assignment.
test_12_02_00_1.v:57 : This MSB expression violates the rule: LOG2(DEPTH) </pre>
# test_12_02_00_1.v
<pre>
test_12_02_00_1.v:54: syntax error
</pre>
*Cause*: "reg [LOG2(DEPTH):0] depth;" # test_12_02_00_2.v
<pre>
test_12_02_00_2.v:28: error: Port a (1) of module foo is not declared within module.
test_12_02_00_2.v:28: error: Port b (2) of module foo is not declared within module.
test_12_02_00_2.v:28: error: no wire/reg a in module bar.f1.
test_12_02_00_2.v:28: error: no wire/reg b in module bar.f1.
</pre>
# test_12_02_01_1.v
<pre>
test_12_02_01_1.v:29: syntax error
</pre>
# test_12_02_02_1_2.v
<pre>
test_12_02_02_1_2.v:28: error: Port addr (1) of module my_mem is not declared within module.
test_12_02_02_1_2.v:28: error: Port data (2) of module my_mem is not declared within module.
test_12_02_02_1_2.v:28: error: no wire/reg addr in module top.m.
test_12_02_02_1_2.v:28: error: no wire/reg data in module top.m.
</pre>
# test_12_03_03_2.v
<pre>
test_12_03_03_2.v:46: syntax error
test_12_03_03_2.v:46: error: missing endmodule or attempt to nest modules.
test_12_03_03_2.v:40: error: original module (complex_ports) defined here.
test_12_03_03_2.v:52: syntax error
test_12_03_03_2.v:52: error: missing endmodule or attempt to nest modules.
test_12_03_03_2.v:40: error: original module (complex_ports) defined here.
test_12_03_03_2.v:56: syntax error
test_12_03_03_2.v:56: error: missing endmodule or attempt to nest modules.
test_12_03_03_2.v:40: error: original module (complex_ports) defined here.
test_12_03_03_2.v:61: syntax error
test_12_03_03_2.v:61: error: missing endmodule or attempt to nest modules.
test_12_03_03_2.v:40: error: original module (complex_ports) defined here.
test_12_03_03_2.v:65: syntax error
test_12_03_03_2.v:65: error: missing endmodule or attempt to nest modules.
test_12_03_03_2.v:40: error: original module (complex_ports) defined here.
test_12_03_03_2.v:66: error: port a already has a port declaration.
test_12_03_03_2.v:62: error: Port ``a'' has already been declared a port.
</pre>
# test_12_03_06_1.v
<pre>
test_12_03_06_1.v:34: error: port ``Out'' is not a port of instance1.
test_12_03_06_1.v:34: error: port ``In1'' is not a port of instance1.
test_12_03_06_1.v:34: error: port ``In2'' is not a port of instance1.
</pre>
# test_12_03_07_1.v
<pre>
test_12_03_07_1.v:29: error: Scalar port ``net_r'' has a vectored net declaration [64:1].
test_12_03_07_1.v:26: test_12_03_07_1.v:34: error: no wire/reg net_r in module driver.
test_12_03_07_1.v:33: error: Scalar port ``net_r'' has a vectored net declaration [64:1].
test_12_03_07_1.v:32: error: no wire/reg net_r in module receiver.
test_12_03_07_1.v:29: error: Net net_r is not defined in this context.
test_12_03_07_1.v:36: error: Unable to bind wire/reg/memory `net_r' in `receiver'
ivl: netmisc.cc:467: void eval_expr(NetExpr*&, int): Assertion `expr' failed.
</pre>
*Cause*: # test_12_04_01_1.v
<pre>
26: test_12_04_01_1.v:49: syntax error
</pre>
# test_12_04_01_2.v
<pre>
test_12_04_01_2.v:39: syntax error
</pre>
# test_12_04_01_5.v
<pre>
test_12_04_01_5.v:35: error: Unknown module driver (net_r); type: M3
27: output net_r; test_12_04_01_5.v:35: error: Unknown module type: M3
28: real r; test_12_04_01_5.v:33: error: Unknown module type: M2
29: wire [64:1] net_r = $realtobits(r); test_12_04_01_5.v:35: error: Unknown module type: M3
30: endmodule test_12_04_01_5.v:35: error: Unknown module type: M3
31:
32: test_12_04_01_5.v:33: error: Unknown module receiver (net_r); type: M2
33: input net_r; test_12_04_01_5.v:31: error: Unknown module type: M1
34: wire [64:1] net_r; test_12_04_01_5.v:35: error: Unknown module type: M3
35: real r; test_12_04_01_5.v:35: error: Unknown module type: M3
36: initial assign r = $bitstoreal (net_r); test_12_04_01_5.v:33: error: Unknown module type: M2
37: endmodule test_12_04_01_5.v:35: error: Unknown module type: M3
test_12_04_01_5.v:35: error: Unknown module type: M3
test_12_04_01_5.v:33: error: Unknown module type: M2
test_12_04_01_5.v:40: error: Unknown module type: M4
test_12_04_01_5.v:40: error: Unknown module type: M4
test_12_04_01_5.v:31: error: Unknown module type: M1
*** These modules were missing:
M1 referenced 2 times.
M2 referenced 4 times.
M3 referenced 8 times.
M4 referenced 2 times.
***
</pre>
# test_12_04_02_1.v
<pre>
test_12_04_02_1.v:46: syntax error
test_12_04_02_1.v:46: error: invalid module item.
</pre>
*Cause*: "else;" # test_12_04_02_2.v
<pre>
test_12_04_02_2.v:44: error: Wrong number of ports. Expecting 0, got 3.
</pre>
# test_12_04_02_3.v
<pre>
test_12_04_02_3.v:26: error: Cannot evaluate genvar case expression: WIDTH
</pre>
# test_12_04_02_4.v
<pre>
test_12_04_02_4.v:38: error: Unknown module type: sms_08b216t0
test_12_04_02_4.v:38: error: Unknown module type: sms_08b216t0
test_12_04_02_4.v:38: error: Unknown module type: sms_08b216t0
test_12_04_02_4.v:38: error: Unknown module type: sms_08b216t0
*** These modules were missing:
sms_08b216t0 referenced 4 times.
***
</pre>
# test_12_06_00_1.v
<pre>
test_12_06_00_1.v:34: error: Could not find variable ``b_c1.i'' in ``a._b1''
test_12_06_00_1.v:34: error: Could not find variable ``b_c1.i'' in ``d.d_b1''
test_12_06_00_1.v:53: error: Could not find variable ``a.a_b1.i'' in ``d''
test_12_06_00_1.v:55: error: Could not find variable ``a.a_b1.b_c1.i'' in ``d''
test_12_06_00_1.v:56: error: Could not find variable ``d.d_b1.b_c1.i'' in ``d''
test_12_06_00_1.v:57: error: Could not find variable ``a.a_b1.b_c2.i'' in ``d''
</pre>