Add regression test for issue #1184.

This checks the temporary fix of outputing a suitable "sorry" message.

ivtest/gold/br_gh1184-vvp-stderr.gold

@@ -0,0 +1 @@
+sorry: multi-bit module path delays are currently not fully supported.

ivtest/gold/br_gh1184-vvp-stdout.gold

@@ -0,0 +1,6 @@
+1 00 xx
+3 00 00
+4 11 00
+5 11 11
+7 10 11
+9 10 10

ivtest/ivltests/br_gh1184.v

@@ -0,0 +1,57 @@
+module dut(input wire [1:0] i, output wire [1:0] o);
+
+assign o = i;
+
+specify
+  specparam tRISE = 1;
+  specparam tFALL = 2;
+
+  (i => o) = (tRISE, tFALL);
+endspecify
+
+endmodule
+
+module test();
+
+reg  [1:0] i;
+wire [1:0] o;
+
+dut dut(i, o);
+
+reg failed = 0;
+
+initial begin
+  #1 $monitor("%0t %b %b", $time, i, o);
+
+  i = 2'b00;
+  #0      if (o !== 2'bxx) failed = 1;
+  #1;  #0 if (o !== 2'bxx) failed = 1;
+  #1;  #0 if (o !== 2'b00) failed = 1;
+  #1;  #0 if (o !== 2'b00) failed = 1;
+
+  i = 2'b11;
+  #0      if (o !== 2'b00) failed = 1;
+  #1;  #0 if (o !== 2'b11) failed = 1;
+  #1;  #0 if (o !== 2'b11) failed = 1;
+  #1;  #0 if (o !== 2'b11) failed = 1;
+
+  i = 2'b10;
+  #0      if (o !== 2'b11) failed = 1;
+  #1;  #0 if (o !== 2'b11) failed = 1;
+  #1;  #0 if (o !== 2'b10) failed = 1;
+  #1;  #0 if (o !== 2'b10) failed = 1;
+
+  i = 2'b01;
+  #0      if (o !== 2'b10) failed = 1;
+  #1;  #0 if (o !== 2'b11) failed = 1;
+  #1;  #0 if (o !== 2'b01) failed = 1;
+  #1;  #0 if (o !== 2'b01) failed = 1;
+
+  #1;
+  if (failed)
+    $display("FAILED");
+  else
+    $display("PASSED");
+end
+
+endmodule

ivtest/regress-vvp.list

@@ -63,6 +63,7 @@ br_gh1163			vvp_tests/br_gh1163.json
 br_gh1180a			vvp_tests/br_gh1180a.json
 br_gh1180b			vvp_tests/br_gh1180b.json
 br_gh1181			vvp_tests/br_gh1181.json
+br_gh1184			vvp_tests/br_gh1184.json
 ca_time_real`			vvp_tests/ca_time_real.json
 case1				vvp_tests/case1.json
 case2				vvp_tests/case2.json

ivtest/vvp_tests/br_gh1184.json

@@ -0,0 +1,6 @@
+{
+    "type" : "EF",
+    "source" : "br_gh1184.v",
+    "gold" : "br_gh1184",
+    "iverilog-args" : [ "-gspecify" ]
+}