diff --git a/ivtest/gold/br_gh1087a1-iverilog-stderr.gold b/ivtest/gold/br_gh1087a1-iverilog-stderr.gold
new file mode 100644
index 000000000..222f490b4
--- /dev/null
+++ b/ivtest/gold/br_gh1087a1-iverilog-stderr.gold
@@ -0,0 +1 @@
+ivltests/br_gh1087a.v:3: Net data type requires SystemVerilog or -gxtypes.
diff --git a/ivtest/gold/br_gh1087a2-iverilog-stderr.gold b/ivtest/gold/br_gh1087a2-iverilog-stderr.gold
new file mode 100644
index 000000000..816d398aa
--- /dev/null
+++ b/ivtest/gold/br_gh1087a2-iverilog-stderr.gold
@@ -0,0 +1,2 @@
+ivltests/br_gh1087a.v:6: error: Unresolved net/uwire r cannot have multiple drivers.
+1 error(s) during elaboration.
diff --git a/ivtest/gold/br_gh1087a3-iverilog-stderr.gold b/ivtest/gold/br_gh1087a3-iverilog-stderr.gold
new file mode 100644
index 000000000..b0ae793b0
--- /dev/null
+++ b/ivtest/gold/br_gh1087a3-iverilog-stderr.gold
@@ -0,0 +1,2 @@
+ivltests/br_gh1087a.v:3: error: Net `r` can not be of type `real`.
+1 error(s) during elaboration.
diff --git a/ivtest/gold/br_gh1087b-iverilog-stderr.gold b/ivtest/gold/br_gh1087b-iverilog-stderr.gold
new file mode 100644
index 000000000..1d1843f32
--- /dev/null
+++ b/ivtest/gold/br_gh1087b-iverilog-stderr.gold
@@ -0,0 +1,2 @@
+ivltests/br_gh1087b.v:6: error: Unresolved net/uwire b cannot have multiple drivers.
+1 error(s) during elaboration.
diff --git a/ivtest/gold/br_gh1087c-iverilog-stderr.gold b/ivtest/gold/br_gh1087c-iverilog-stderr.gold
new file mode 100644
index 000000000..96e18fb88
--- /dev/null
+++ b/ivtest/gold/br_gh1087c-iverilog-stderr.gold
@@ -0,0 +1,2 @@
+ivltests/br_gh1087c.v:3: error: Net `b` can not be of type `bool`.
+1 error(s) during elaboration.
diff --git a/ivtest/ivltests/br_gh1087a.v b/ivtest/ivltests/br_gh1087a.v
new file mode 100644
index 000000000..b638c90a6
--- /dev/null
+++ b/ivtest/ivltests/br_gh1087a.v
@@ -0,0 +1,8 @@
+module test();
+
+wire real r;
+
+assign r = 1.0;
+assign r = 2.0;
+
+endmodule
diff --git a/ivtest/ivltests/br_gh1087b.v b/ivtest/ivltests/br_gh1087b.v
new file mode 100644
index 000000000..8908b6f45
--- /dev/null
+++ b/ivtest/ivltests/br_gh1087b.v
@@ -0,0 +1,8 @@
+module test();
+
+wire bool [7:0] b;
+
+assign b = 8'h11;
+assign b = 8'h22;
+
+endmodule
diff --git a/ivtest/ivltests/br_gh1087c.v b/ivtest/ivltests/br_gh1087c.v
new file mode 100644
index 000000000..fb1fbe48a
--- /dev/null
+++ b/ivtest/ivltests/br_gh1087c.v
@@ -0,0 +1,8 @@
+module test();
+
+wire bit [7:0] b;
+
+assign b = 8'h11;
+assign b = 8'h22;
+
+endmodule
diff --git a/ivtest/regress-vvp.list b/ivtest/regress-vvp.list
index 17f7c63f0..a37079745 100644
--- a/ivtest/regress-vvp.list
+++ b/ivtest/regress-vvp.list
@@ -34,6 +34,11 @@ br_gh1018			vvp_tests/br_gh1018.json
 br_gh1029			vvp_tests/br_gh1029.json
 br_gh1075a			vvp_tests/br_gh1074a.json
 br_gh1075b			vvp_tests/br_gh1074b.json
+br_gh1087a1			vvp_tests/br_gh1087a1.json
+br_gh1087a2			vvp_tests/br_gh1087a2.json
+br_gh1087a3			vvp_tests/br_gh1087a3.json
+br_gh1087b			vvp_tests/br_gh1087b.json
+br_gh1087c			vvp_tests/br_gh1087c.json
 ca_time_real`			vvp_tests/ca_time_real.json
 case1				vvp_tests/case1.json
 case2				vvp_tests/case2.json
diff --git a/ivtest/vvp_tests/br_gh1087a1.json b/ivtest/vvp_tests/br_gh1087a1.json
new file mode 100644
index 000000000..748a7d7e5
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1087a1.json
@@ -0,0 +1,6 @@
+{
+    "type"   : "CE",
+    "source" : "br_gh1087a.v",
+    "gold"   : "br_gh1087a1",
+    "iverilog-args" : [ "-gno-xtypes" ]
+}
diff --git a/ivtest/vvp_tests/br_gh1087a2.json b/ivtest/vvp_tests/br_gh1087a2.json
new file mode 100644
index 000000000..767646880
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1087a2.json
@@ -0,0 +1,6 @@
+{
+    "type"   : "CE",
+    "source" : "br_gh1087a.v",
+    "gold"   : "br_gh1087a2",
+    "iverilog-args" : [ "-gxtypes" ]
+}
diff --git a/ivtest/vvp_tests/br_gh1087a3.json b/ivtest/vvp_tests/br_gh1087a3.json
new file mode 100644
index 000000000..7d076c4da
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1087a3.json
@@ -0,0 +1,6 @@
+{
+    "type"   : "CE",
+    "source" : "br_gh1087a.v",
+    "gold"   : "br_gh1087a3",
+    "iverilog-args" : [ "-g2009", "-gno-xtypes" ]
+}
diff --git a/ivtest/vvp_tests/br_gh1087b.json b/ivtest/vvp_tests/br_gh1087b.json
new file mode 100644
index 000000000..0f8269039
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1087b.json
@@ -0,0 +1,6 @@
+{
+    "type"   : "CE",
+    "source" : "br_gh1087b.v",
+    "gold"   : "br_gh1087b",
+    "iverilog-args" : [ "-gxtypes" ]
+}
diff --git a/ivtest/vvp_tests/br_gh1087c.json b/ivtest/vvp_tests/br_gh1087c.json
new file mode 100644
index 000000000..efae11d3a
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh1087c.json
@@ -0,0 +1,6 @@
+{
+    "type"   : "CE",
+    "source" : "br_gh1087c.v",
+    "gold"   : "br_gh1087c",
+    "iverilog-args" : [ "-g2009", "-gno-xtypes" ]
+}