[Bug ada/82141] [8 Regression] raised RTSFIND.RE_NOT_AVAILABLE : rtsfind.adb:851 on darwin

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82141

--- Comment #16 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> The 'raised RTSFIND.RE_NOT_AVAILABLE : rtsfind.adb:851' is still present.
> 
> So.. I wonder if we have (a) a bug in libunwind that's not dealing correctly
> with some expected behaviour or (b) some extension to DWARF unwinding that's
> needed to support Ada, which is not yet present in libunwind (libunwind is
> Open Sourced as part of the LLVM project).
> 
> Are you aware of any special needs for the unwinder to support Ada?

No, we don't have any issue on Darwin internally with a compiler configured
--with-stage1-ldflags=-static-libstdc++ --with-boot-ldflags=-static-libstdc++
(but it's on Darwin 14.5.0 and 15.5.0).