commit 1a0877f99dc8130f3b85ab096bc03059e4c3cd0a
author John McCall <rjmccall@apple.com> Wed Mar 28 23:30:44 2012 +0000
committer John McCall <rjmccall@apple.com> Wed Mar 28 23:30:44 2012 +0000
tree ed675c50db4cc6b68ac8636470be7746e92b6814
parent 7e58b3862a61b1297e1e6a12e14205d1d2df346b

When we can't prove that the target of an aggregate copy is
a complete object, the memcpy needs to use the data size of
the structure instead of its sizeof() value.  Fixes PR12204.

llvm-svn: 153613

clang/lib/CodeGen/CGDeclCXX.cpp

diff --git a/clang/lib/CodeGen/CGDeclCXX.cpp b/clang/lib/CodeGen/CGDeclCXX.cpp
index dc52b11..dfbd411 100644
--- a/clang/lib/CodeGen/CGDeclCXX.cpp
+++ b/clang/lib/CodeGen/CGDeclCXX.cpp
@@ -46,9 +46,11 @@
   } else if (type->isAnyComplexType()) {
     CGF.EmitComplexExprIntoAddr(Init, DeclPtr, lv.isVolatile());
   } else {
-    CGF.EmitAggExpr(Init, AggValueSlot::forLValue(lv,AggValueSlot::IsDestructed,
-                                          AggValueSlot::DoesNotNeedGCBarriers,
-                                                  AggValueSlot::IsNotAliased));
+    CGF.EmitAggExpr(Init, AggValueSlot::forLValue(lv,
+                                           AggValueSlot::IsDestructed,
+                                           AggValueSlot::DoesNotNeedGCBarriers,
+                                           AggValueSlot::IsNotAliased,
+                                           AggValueSlot::IsCompleteObject));
   }
 }