From d395f7913336417bcbbea740fcdc8589789626bc Mon Sep 17 00:00:00 2001
From: Dan Albert <danalbert@google.com>
Date: Mon, 20 Oct 2014 14:44:39 -0700
Subject: [PATCH] Fix an overflow found by ASAN.

Sometimes len is 0.

Change-Id: I031000188edc57663a5519b00cbbb751600d32f4
---
 tools/aapt/Resource.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/aapt/Resource.cpp b/tools/aapt/Resource.cpp
index 6ebf41f1ad96a..cc9207dc39e0f 100644
--- a/tools/aapt/Resource.cpp
+++ b/tools/aapt/Resource.cpp
@@ -553,7 +553,7 @@ static int validateAttr(const String8& path, const ResTable& table,
                     String8(parser.getElementName(&len)).string(), attr);
             return ATTR_LEADING_SPACES;
         }
-        if (str[len-1] == ' ') {
+        if (len != 0 && str[len-1] == ' ') {
             fprintf(stderr, "%s:%d: Tag <%s> attribute %s can not end with a space.\n",
                     path.string(), parser.getLineNumber(),
                     String8(parser.getElementName(&len)).string(), attr);