Fix buffer overflow in PrintMacroDefinition() by inverting the check to see if the...

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85872 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index f3cb20619ed5f5178621b209279e0500cab2dda8..630a093a4bf6cc81c39bbe9796ed62bd0acec4d5 100644 (file)
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -66,7 +66,7 @@ static void PrintMacroDefinition(const IdentifierInfo &II, const MacroInfo &MI,
       OS << ' ';
 
     // Make sure we have enough space in the spelling buffer.
-    if (I->getLength() < SpellingBuffer.size())
+    if (I->getLength() > SpellingBuffer.size())
       SpellingBuffer.resize(I->getLength());
     const char *Buffer = SpellingBuffer.data();
     unsigned SpellingLen = PP.getSpelling(*I, Buffer);