tree cdfbdbc897492a12bdf9fbef886bf5bbd63ff224
parent 7bd23291e29e1874f57a628e94d7632b3b367ae6
author Nik Bond <nikbond97@gmail.com> 1621086047 +0300
committer Emilio Cobos Álvarez <emilio@crisal.io> 1637891040 +0100
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Fix an UB in layout tests

 - Replaced dereferencing of null ptr with
   zero bit pattern + transmute + std::ptr::addr_of!
   to avoid UB. It affects only checks of fields offsets
 - Overwritten expected with BINDGEN_OVERWRITE_EXPECTED=1
 - Overwritten test_multiple_header_calls_in_builder and test_mixed_header_and_header_contents
   manually because https://github.com/rust-lang/rust-bindgen/issues/2054
 - Do not check the layout for repr(C) unions
 - Do not call the destructor of tmp struct to avoid other UB