diff --git a/tests/webtbs/tw40307.pp b/tests/webtbs/tw40307.pp
new file mode 100644
index 0000000000..46a187c36f
--- /dev/null
+++ b/tests/webtbs/tw40307.pp
@@ -0,0 +1,53 @@
+{ %OPT=-MObjFPC -O2 -a }
+
+program tw40307;
+
+type
+  TOutStruct = record
+    V1: SmallInt;
+    V2: LongInt;
+  end;
+
+procedure SetParams(InputVal: Boolean; out V: TOutStruct); noinline;
+  var
+    V1: SmallInt;
+    V2: LongInt;
+  begin
+    if not InputVal then
+      begin
+        V1 := 32;
+        V2 := 8;
+      end
+    else
+      begin
+        V1 := 16;
+        V2 := 16;
+      end;
+
+    V.V1 := V1;
+    V.V2 := V2;
+  end;
+
+const
+  Expected: array[Boolean] of TOutStruct = ((V1: 32; V2: 8), (V1: 16; V2: 16));
+var
+  Param: Boolean; OV: TOutStruct;
+begin
+  for Param := False to True do
+    begin
+      SetParams(Param, OV);
+      if (OV.V1 <> Expected[Param].V1) then
+        begin
+          WriteLn('FAIL: OV.V1 = ', OV.V1, ' but expected ', Expected[Param].V1);
+          Halt(1);
+        end;
+
+      if (OV.V2 <> Expected[Param].V2) then
+        begin
+          WriteLn('FAIL: OV.V2 = ', OV.V2, ' but expected ', Expected[Param].V2);
+          Halt(2);
+        end;
+    end;
+
+  WriteLn('ok');
+end.
\ No newline at end of file