commit 24adaee6bc305b69200c7c022b63fe4a414f6502
author Richard Smith <richard-llvm@metafoo.co.uk> Fri Aug 24 23:43:39 2012 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Fri Aug 24 23:43:39 2012 +0000
tree 5f01a13f18a7b9a99f940b04d5487168aa84898d
parent 12cda3384abf8fc077bdea86ec797f2c8027ca76

Fix integer unsigned behavior in clang due to signed left shift overflow.

llvm-svn: 162626

clang/lib/CodeGen/CGRTTI.cpp

diff --git a/clang/lib/CodeGen/CGRTTI.cpp b/clang/lib/CodeGen/CGRTTI.cpp
index eca9f5b..e46423b 100644
--- a/clang/lib/CodeGen/CGRTTI.cpp
+++ b/clang/lib/CodeGen/CGRTTI.cpp
@@ -886,7 +886,7 @@
       Offset = Layout.getBaseClassOffset(BaseDecl);
     };
     
-    OffsetFlags = Offset.getQuantity() << 8;
+    OffsetFlags = uint64_t(Offset.getQuantity()) << 8;
     
     // The low-order byte of __offset_flags contains flags, as given by the 
     // masks from the enumeration __offset_flags_masks.