search for: __cxa_type_match

...catch handlers, and would mean layering problems if we > moved it. Antoine, do you remember the specifics? > For a complete implementation, the arm-defined PRs (__aeabi_unwind_cpp_pr[0-2]) need to call the functions in 8.4.2 in phase 2, which are in libc++abi. In particular, as you mention, __cxa_type_match needs the rtti info. That said, currently this part is not implemented in libunwind, among others because clang never generates code that uses arm-defined PRs for exceptions and cleanup, only for trivial frame unwinding (it always uses __gxx_personality_v0 for exceptions/cleanup), so I don't t...

So, I remember we discussed this earlier this year, but I can't find the thread. The idea is to move libunwind into compiler-rt for the simple reasons below: 1. Unwinding is not exclusive to C++, nor exception handling. 2. Clang still includes libgcc_s and libgcc_eh when using compiler-rt (maybe eh isn't needed, but it was there for libgcc). 3. Testing the libunwind with libc++ on ARM is