Don't assert in CastSizeChecker when the casted-to pointee is an incomplete type.  Fixes PR 8050.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112738 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Checker/CastSizeChecker.cpp b/lib/Checker/CastSizeChecker.cpp
index a502c10..6676fe5 100644
--- a/lib/Checker/CastSizeChecker.cpp
+++ b/lib/Checker/CastSizeChecker.cpp
@@ -44,6 +44,10 @@
 
   QualType ToPointeeTy = ToPTy->getPointeeType();
 
+  // Only perform the check if 'ToPointeeTy' is a complete type.
+  if (ToPointeeTy->isIncompleteType())
+    return;
+
   const GRState *state = C.getState();
   const MemRegion *R = state->getSVal(E).getAsRegion();
   if (R == 0)