[Bug target/42159] unwinding issues on darwin

[niklas.hauser at arm dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42159

--- Comment #37 from Niklas Hauser <niklas.hauser at arm dot com> ---
(In reply to Iain Sandoe from comment #36)
> The underlying issue is understood and we've worked around it to for the
> case of "-static-libgcc" [PR80556].

Oh, we worked on this at the same time.
The bug is gone for us on gcc trunk with your changes, thanks!

> Please could you identify:
>  1. the version of GCC you're testing? (the ones mentioned in the PR here
> are well out of 'support').  Although there are probably work-around patches
> that could be applied

I was working with gcc trunk from early Sept. which didn't have your patch yet.

>  2. the command line(s)

Simply ./configure --disable-bootstrap --enable-languages=c,c++ plus the usual
directory/path flags.
Example is compiled with g++ -static-libgcc .

> I have some patches in progress to tidy up the CRT/libgcc/unwinder stuff
> (which do, essentially, remove the unwinder from the build for later darwin
> - but leave them in place for Darwin9 etc.)

Yes, I was going to suggest removing the unwinder code for 64b builds too,
didn't work on any patches though.

Did you apply your patch to trunk only? I didn't find it in the GCC 7 branch.
Would you consider back porting it?