fixes 9195 (#12055)

tests/metatype/ttypedesc2.nim

@@ -48,3 +48,27 @@ doAssert hasDefault2(int) == "int"
 doAssert hasDefault2(string) == "string"
 doAssert hasDefault2() == "string"
 
+
+# bug #9195
+type
+  Error = enum
+    erA, erB, erC
+  Result[T, U] = object
+    x: T
+    u: U
+  PB = object
+
+proc decodeUVarint*(itzzz: typedesc[SomeUnsignedInt],
+                    data: openArray[char]): Result[itzzz, Error] =
+  result = Result[itzzz, Error](x: 0, u: erC)
+
+discard decodeUVarint(uint32, "abc")
+
+type
+  X = object
+  Y[T] = object
+
+proc testObj(typ: typedesc[object]): Y[typ] =
+  discard
+
+discard testObj(X)