Deciphering a build failure

Hi,

I need help with deciphering a build failure that I'm responsible for.
The error is:

  clang: CGVTT.cpp:74: void
clang::CodeGen::CodeGenVTables::EmitVTTDefinition(llvm::GlobalVariable*,
llvm::GlobalValue::LinkageTypes, const clang::CXXRecordDecl*):
Assertion `AddressPoint != 0 && "Did not find ctor vtable address
point!"' failed.

The patch is: http://reviews.llvm.org/D7020

The full details can be found at:
http://lab.llvm.org:8011/builders/clang-native-arm-cortex-a9/builds/24747

I don't know the first thing about Clang, so I'd really appreciate
help fixing this.

Thanks.

Ram