This parser is used to test about why using libclang to parse C++ source code,
causing __attribute__ disappear in nasa/trick Interface Code Generator (ICG).
This parser give the skelton of how trick-ICG works and will dump out the
AST by the Clang AST consumer ASTPrinter.
I found that trick-ICG will give out wrong memory layout of the arma::vec, and
relative stuff. Clang AST dumping & armadillo source code shows that arma::vec layout
looks like this, having __attribute__((__aligned__)) for mem pointer:
$ clang -Xclang -ast-dump -fsyntax-only test.cpp
...
When reproduce by in signle file w/o include, trick-ICG and the parser.cpp have the
same result as clang, which will calculate the offset with correct padding.