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.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153613 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index 4455f1a..f5d7944 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -1875,7 +1875,8 @@
if (Align > AI->getAlignment())
AI->setAlignment(Align);
Args.push_back(AI);
- EmitAggregateCopy(AI, Addr, I->Ty, RV.isVolatileQualified());
+ EmitAggregateCopy(AI, Addr, I->Ty, RV.isVolatileQualified(),
+ /*destIsCompleteObject*/ true);
// Validate argument match.
checkArgMatches(AI, IRArgNo, IRFuncTy);