[cfe-users] How to dump the vtable's or record's layout?

[Yi-Hong Lyu via cfe-users]

Hello all,

I would like to dump the vtable's or record's layout therefore I download
the binary of Clang 3.7 for Linux from official site. But I got nothing
with:

$ clang+llvm-3.7.0-x86_64-linux-gnu-ubuntu-14.04/bin/clang++ -cc1
-fdump-vtable-layouts vtable.cpp

or

$ clang+llvm-3.7.0-x86_64-linux-gnu-ubuntu-14.04/bin/clang++ -cc1
-fdump-record-layouts vtable.cpp

I am wondering how to dump vtable's or record's layout? Is there anything
wrong with my instructions?

Thanks,
Yi-Hong
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