handle in semConst

compiler/ccgexprs.nim

@@ -2708,7 +2708,6 @@ proc expr(p: BProc, n: PNode, d: var TLoc) =
     inc p.splitDecls
     genGotoState(p, n)
   of nkBreakState: genBreakState(p, n, d)
-  of nkExprColonExpr: expr(p, n.sons[1], d)
   else: internalError(p.config, n.info, "expr(" & $n.kind & "); unknown node kind")
 
 proc genNamedConstExpr(p: BProc, n: PNode): Rope =

compiler/jsgen.nim

@@ -2503,7 +2503,6 @@ proc gen(p: PProc, n: PNode, r: var TCompRes) =
   of nkPragmaBlock: gen(p, n.lastSon, r)
   of nkComesFrom:
     discard "XXX to implement for better stack traces"
-  of nkExprColonExpr: gen(p, n.sons[1], r)
   else: internalError(p.config, n.info, "gen: unknown node type: " & $n.kind)
 
 proc newModule(g: ModuleGraph; module: PSym): BModule =

compiler/semstmts.nim

@@ -641,7 +641,8 @@ proc semConst(c: PContext, n: PNode): PNode =
         addSon(b, copyTree(def))
       else:
         setVarType(c, v, typ.sons[j])
-        v.ast = def[j]
+        v.ast = if def[j].kind != nkExprColonExpr: def[j]
+                else: def[j].sons[1]
         b.sons[j] = newSymNode(v)
     addSon(result,b)
   dec c.inStaticContext