fixes #1274

compiler/ccgexprs.nim

@@ -1125,7 +1125,7 @@ proc genObjConstr(p: BProc, e: PNode, d: var TLoc) =
       ty = getUniqueType(ty.sons[0])
     if field == nil or field.loc.r == nil: internalError(e.info, "genObjConstr")
     if it.len == 3 and optFieldCheck in p.options:
-      genFieldCheck(p, it.sons[2], r, field)
+      genFieldCheck(p, it.sons[2], tmp2.r, field)
     app(tmp2.r, ".")
     app(tmp2.r, field.loc.r)
     tmp2.k = locTemp

tests/objects/tobjconstr2.nim

@@ -32,3 +32,19 @@ type
       size: tuple[w, h: float]
 
 var d = Graphic(kind: 1, size: (12.9, 6.9))
+
+# bug #1274
+type
+  K = enum Koo, Kar
+  Graphic2 = object of RootObj
+    case kind: K
+    of Koo:
+      radius: float
+    of Kar:
+      size: tuple[w, h: float]
+
+type NamedGraphic = object of Graphic2
+  name: string
+
+var ngr = NamedGraphic(kind: Koo, radius: 6.9, name: "Foo")
+echo ngr.name