[libcxx] r196411 - Give all members of exception types default visibility. Lack of this is causing some illegal code relocations rare and hard to reproduce cases.

[Rafael Espíndola via cfe-commits]

On 8 January 2016 at 19:50, Duncan P. N. Exon Smith via cfe-commits
<cfe-commits at lists.llvm.org> wrote:
> [re-send to lists.llvm.org]
> [necromancy]
>
> This is causing some strangeness for users of libc++ headers that
> ship dylibs and build with -fno-rtti and -fvisibility=hidden.
>
> Strangely, -fno-rtti does *not* imply -fno-exceptions; the type info
> needed for exceptions is generated on-the-fly.  This means that each
> translation unit generates a linkonce_odr copy of the std::exception
> type info -- weird, but kind of reasonable?

Will gcc produce a copy too? It seems really strange to produce
different linkages for -frtti and -fno-rtti -fexcptions.

Cheers,
Rafael