From 856f2d895c4f18f1b7c89f4248622788e8c85fd3 Mon Sep 17 00:00:00 2001
From: vilicvane <i@vilic.info>
Date: Fri, 4 Sep 2015 21:47:28 +0800
Subject: [PATCH] Fix issue #4603

---
 src/compiler/emitter.ts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index eeaab6d212..8a04be99ca 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -897,6 +897,16 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                     write(text);
                 }
             }
+            
+            function getEmittingNumericLiteralText(node: LiteralExpression): string {
+                let text = getLiteralText(node);
+                
+                if (languageVersion < ScriptTarget.ES6 && isBinaryOrOctalIntegerLiteral(node, text)) {
+                    return node.text;
+                } else {
+                    return text;
+                }
+            }
 
             function getLiteralText(node: LiteralExpression) {
                 // Any template literal or string literal with an extended escape
@@ -2352,7 +2362,8 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, Promi
                             operand.kind !== SyntaxKind.PostfixUnaryExpression &&
                             operand.kind !== SyntaxKind.NewExpression &&
                             !(operand.kind === SyntaxKind.CallExpression && node.parent.kind === SyntaxKind.NewExpression) &&
-                            !(operand.kind === SyntaxKind.FunctionExpression && node.parent.kind === SyntaxKind.CallExpression)) {
+                            !(operand.kind === SyntaxKind.FunctionExpression && node.parent.kind === SyntaxKind.CallExpression) &&
+                            !(operand.kind === SyntaxKind.NumericLiteral && node.parent.kind === SyntaxKind.PropertyAccessExpression && !/^0[box]|[e.]/i.test(getEmittingNumericLiteralText(<LiteralExpression>operand)))) {
                             emit(operand);
                             return;
                         }