fix #1050

tests/generics/t1050.nim

@@ -0,0 +1,16 @@
+discard """
+  msg: "int"
+  output: "4"
+"""
+
+import typetraits
+
+type ArrayType[T] = distinct T
+
+proc arrayItem(a: ArrayType): auto =
+  static: echo(name(type(a).T))
+  result = (type(a).T)(4)
+
+var arr: ArrayType[int]
+echo arrayItem(arr)
+