[libcxxabi] r228408 - unwind: use -fno-rtti -fno-exceptions -funwind-tables

[Sergey Dmitrouk]

On Wed, Feb 11, 2015 at 09:46:36PM -0800, Saleem Abdulrasool wrote:
>    Can you provide more information about how you are building things?A
>    Perhaps an exact set of steps to reproduce this.A  The change should only
>    effects unwind.A  As such, the following is sufficient for checking the
>    result:
>    $ cat reduced.cc
>    extern "C" int printf(const char *, ...);
>    int main(int argc, char **argv) {
>    A  try { throw 1; } catch (const int &i) { printf("caught %u\n", i); }
>    A  return 0;
>    }
>    $ armv7a-hardfloat-linux-gnueabi-g++-4.8.3 -fno-stack-protector -c
>    reduced.cc -o reduced.o
>    $ armv7a-hardfloat-linux-gnueabi-g++-4.8.3 -nodefaultlibs reduced.o -o
>    reduced -Llib -lunwind -lc -lc++abi
>    $ LD_LIBRARY_PATH=lib ./reduced
>    caught 1
>    That was with current ToT of libc++abi and libunwind (LLVM).

Sorry for bothering, it doesn't happen if I compile libunwind with gcc.  Only
libunwind built with clang fails, so it must be an issue somewhere else.

Thanks,
Sergey