SJLJ exceptions are broken

[Mark Mitchell]

On IRIX 6.5, all C++ tests fail.  The reason is that libstdc++ refers
to functions not defined in libgcc.  In particular,
_Unwind_Get{Data,Text}RelBase are not defined with using SJLJ
exceptions, because all of unwind-dw2.c is commented out, but they are
referred to because unwind-pe.h talks about them, and that file is
included in libsupc++'s exception_support.cc.

How is this supposed to work?

Thanks,

--
Mark Mitchell                   mark@codesourcery.com
CodeSourcery, LLC               http://www.codesourcery.com