diff --git a/ivtest/gold/br_gh939-iverilog-stderr.gold b/ivtest/gold/br_gh939-iverilog-stderr.gold
new file mode 100644
index 000000000..e7388707a
--- /dev/null
+++ b/ivtest/gold/br_gh939-iverilog-stderr.gold
@@ -0,0 +1,4 @@
+ivltests/br_gh939.v:10: error: Net o is not defined in this context.
+ivltests/br_gh939.v:10: error: Output port expression must support continuous assignment.
+ivltests/br_gh939.v:10:      : Port 1 (o) of M is connected to o
+2 error(s) during elaboration.
diff --git a/ivtest/ivltests/br_gh939.v b/ivtest/ivltests/br_gh939.v
new file mode 100644
index 000000000..99ace6cac
--- /dev/null
+++ b/ivtest/ivltests/br_gh939.v
@@ -0,0 +1,11 @@
+// Check the line and file information for errors related to implicit named port
+// connections are correct.
+
+module M(
+  output o
+);
+endmodule
+
+module test;
+  M i_m(.o); // Error, no net named o
+endmodule
diff --git a/ivtest/regress-vlg.list b/ivtest/regress-vlg.list
index 862fcbc63..858dc4bc9 100644
--- a/ivtest/regress-vlg.list
+++ b/ivtest/regress-vlg.list
@@ -325,7 +325,7 @@ br_gh283a		normal			ivltests
 br_gh283b		normal			ivltests
 br_gh283c		normal			ivltests
 br_gh309		normal			ivltests
-br_gh315		normal,-gspecify	ivltests
+br_gh315		normal,-g2005-sv,-gspecify	ivltests
 br_gh316a		normal,-gspecify	ivltests
 br_gh316b		normal,-gspecify	ivltests
 br_gh316c		normal,-gspecify	ivltests
diff --git a/ivtest/regress-vvp.list b/ivtest/regress-vvp.list
index f999793ac..da56a85bf 100644
--- a/ivtest/regress-vvp.list
+++ b/ivtest/regress-vvp.list
@@ -5,6 +5,7 @@
 array_packed_write_read		vvp_tests/array_packed_write_read.json
 br_gh13a			vvp_tests/br_gh13a.json
 br_gh13a-vlog95			vvp_tests/br_gh13a-vlog95.json
+br_gh939			vvp_tests/br_gh939.json
 case1				vvp_tests/case1.json
 case2				vvp_tests/case2.json
 case2-S				vvp_tests/case2-S.json
diff --git a/ivtest/run_ivl.py b/ivtest/run_ivl.py
index c81e72d9b..dc3df3f48 100644
--- a/ivtest/run_ivl.py
+++ b/ivtest/run_ivl.py
@@ -114,6 +114,15 @@ def run_cmd(cmd: list) -> subprocess.CompletedProcess:
     res = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     return res
 
+def check_gold(it_key : str, it_gold : str, log_list : list) -> bool:
+    compared = True
+    for log_name in log_list:
+        log_path = os.path.join("log", "{key}-{log}.log".format(key=it_key, log=log_name))
+        gold_path = os.path.join("gold", "{gold}-{log}.gold".format(gold=it_gold, log=log_name))
+        compared = compared and compare_files(log_path, gold_path)
+
+    return compared
+
 def run_CE(options : dict) -> list:
     ''' Run the compiler, and expect an error
 
@@ -123,6 +132,7 @@ def run_CE(options : dict) -> list:
     it_key = options['key']
     it_dir = options['directory']
     it_args = options['iverilog_args']
+    it_gold = options['gold']
 
     build_runtime(it_key)
 
@@ -130,10 +140,14 @@ def run_CE(options : dict) -> list:
     res = run_cmd(cmd)
     log_results(it_key, "iverilog", res)
 
+    log_list = ["iverilog-stdout", "iverilog-stderr"]
+
     if res.returncode == 0:
         return [1, "Failed - CE (no error reported)"]
     elif res.returncode >= 256:
         return [1, "Failed - CE (execution error)"]
+    elif it_gold is not None and not check_gold(it_key, it_gold, log_list):
+        return [1, "Failed - CE (Gold output doesn't match actual output.)"]
     else:
         return [0, "Passed - CE"]
 
@@ -150,11 +164,7 @@ def check_run_outputs(options : dict, expected_fail : bool, it_stdout : str, log
     it_diff = options['diff']
 
     if it_gold is not None:
-        compared = True
-        for log_name in log_list:
-            log_path = os.path.join("log", "{key}-{log}.log".format(key=it_key, log=log_name))
-            gold_path = os.path.join("gold", "{gold}-{log}.gold".format(gold=it_gold, log=log_name))
-            compared = compared and compare_files(log_path, gold_path)
+        compared = check_gold(it_key, it_gold, log_list)
 
         if expected_fail:
             if compared:
diff --git a/ivtest/vvp_tests/br_gh939.json b/ivtest/vvp_tests/br_gh939.json
new file mode 100644
index 000000000..4a8d250e3
--- /dev/null
+++ b/ivtest/vvp_tests/br_gh939.json
@@ -0,0 +1,6 @@
+{
+    "type"   : "CE",
+    "source" : "br_gh939.v",
+    "gold"   : "br_gh939",
+    "iverilog-args" : [ "-g2005-sv" ]
+}
diff --git a/parse.y b/parse.y
index d997c858e..5c98f4fb1 100644
--- a/parse.y
+++ b/parse.y
@@ -5728,10 +5728,11 @@ port_name
 	$$ = tmp;
       }
   | attribute_list_opt '.' IDENTIFIER
-      { named_pexpr_t*tmp = new named_pexpr_t;
+      { pform_requires_sv(@3, "Implicit named port connections");
+	named_pexpr_t*tmp = new named_pexpr_t;
 	tmp->name = lex_strings.make($3);
 	tmp->parm = new PEIdent(lex_strings.make($3), true);
-	FILE_NAME(tmp->parm, @1);
+	FILE_NAME(tmp->parm, @3);
 	delete[]$3;
 	delete $1;
 	$$ = tmp;