From 60f3d92b2a72ee420ebeed3db252b6864413f220 Mon Sep 17 00:00:00 2001
From: "Michael J. Spencer" <bigcheesegs@gmail.com>
Date: Thu, 26 Apr 2012 19:27:11 +0000
Subject: [PATCH] [Support/YAML] Properly fix unitialized variable warning by
 inserting a 'REPLACEMENT CHARACTER' (U+FFFD) when getAsInteger fails.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155653 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Support/YAMLParser.cpp | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/lib/Support/YAMLParser.cpp b/lib/Support/YAMLParser.cpp
index c66c755c6ec..8526d9adae3 100644
--- a/lib/Support/YAMLParser.cpp
+++ b/lib/Support/YAMLParser.cpp
@@ -1732,8 +1732,10 @@ StringRef ScalarNode::unescapeDoubleQuoted( StringRef UnquotedValue
           if (UnquotedValue.size() < 3)
             // TODO: Report error.
             break;
-          unsigned int UnicodeScalarValue = 0;
-          UnquotedValue.substr(1, 2).getAsInteger(16, UnicodeScalarValue);
+          unsigned int UnicodeScalarValue;
+          if (UnquotedValue.substr(1, 2).getAsInteger(16, UnicodeScalarValue))
+            // TODO: Report error.
+            UnicodeScalarValue = 0xFFFD;
           encodeUTF8(UnicodeScalarValue, Storage);
           UnquotedValue = UnquotedValue.substr(2);
           break;
@@ -1742,8 +1744,10 @@ StringRef ScalarNode::unescapeDoubleQuoted( StringRef UnquotedValue
           if (UnquotedValue.size() < 5)
             // TODO: Report error.
             break;
-          unsigned int UnicodeScalarValue = 0;
-          UnquotedValue.substr(1, 4).getAsInteger(16, UnicodeScalarValue);
+          unsigned int UnicodeScalarValue;
+          if (UnquotedValue.substr(1, 4).getAsInteger(16, UnicodeScalarValue))
+            // TODO: Report error.
+            UnicodeScalarValue = 0xFFFD;
           encodeUTF8(UnicodeScalarValue, Storage);
           UnquotedValue = UnquotedValue.substr(4);
           break;
@@ -1752,8 +1756,10 @@ StringRef ScalarNode::unescapeDoubleQuoted( StringRef UnquotedValue
           if (UnquotedValue.size() < 9)
             // TODO: Report error.
             break;
-          unsigned int UnicodeScalarValue = 0;
-          UnquotedValue.substr(1, 8).getAsInteger(16, UnicodeScalarValue);
+          unsigned int UnicodeScalarValue;
+          if (UnquotedValue.substr(1, 8).getAsInteger(16, UnicodeScalarValue))
+            // TODO: Report error.
+            UnicodeScalarValue = 0xFFFD;
           encodeUTF8(UnicodeScalarValue, Storage);
           UnquotedValue = UnquotedValue.substr(8);
           break;