Updated LLVM/Clang to force the record layout engine

to complete C++ classes before traversing their base
classes.

llvm-svn: 156570

lldb/scripts/clang.complete-type-isSafeToConvert.diff

@@ -0,0 +1,19 @@
+Index: lib/CodeGen/CodeGenTypes.cpp
+===================================================================
+--- lib/CodeGen/CodeGenTypes.cpp	(revision 152265)
++++ lib/CodeGen/CodeGenTypes.cpp	(working copy)
+@@ -133,6 +133,14 @@
+   // when a class is translated, even though they aren't embedded by-value into
+   // the class.
+   if (const CXXRecordDecl *CRD = dyn_cast<CXXRecordDecl>(RD)) {
++    if (!CRD->hasDefinition() && CRD->hasExternalLexicalStorage()) {
++      ExternalASTSource *EAS = CRD->getASTContext().getExternalSource();
++      if (!EAS)
++        return false;
++      EAS->CompleteType(const_cast<CXXRecordDecl*>(CRD));
++      if (!CRD->hasDefinition())
++        return false;
++    }
+     for (CXXRecordDecl::base_class_const_iterator I = CRD->bases_begin(),
+          E = CRD->bases_end(); I != E; ++I)
+       if (!isSafeToConvert(I->getType()->getAs<RecordType>()->getDecl(),