Don't read off end of the input array.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49799 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index a2de5d99a057512a45ddaca56d61f2d80c07ddef..2eb37db7e686eeb3ea2c662368a0f3d19e2cb947 100644 (file)
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -527,7 +527,7 @@ static void WriteConstantInt(std::ostream &Out, const Constant *CV,
           Out << (unsigned char)(nibble + '0');
         else
           Out << (unsigned char)(nibble - 10 + 'A');
-        if (shiftcount == 0) {
+        if (shiftcount == 0 && j+4 < width) {
           word = *(++p);
           shiftcount = 64;
           if (width-j-4 < 64)