On Thursday, 12 November 2015 at 16:55:09 UTC, Johannes Pfau
wrote:
To expand on this: I think we'd prefer one __d_personality_v0
which is implemented in upstream druntime and identical for all
compilers.
Making the compilers ABI compatible is probably not a high
priority, but OTOH we shouldn't introduce new ABI
incompatibilities if possible.
It should probably be based on the LDC implementation then, as it
supports the most target platforms (Posix/libunwind, Win64/MSVC,
iOS/SJLJ, and, as work in progress, Win32/SEH) and GDC's
implementation is probably GPL-licensed (with runtime exceptions,
but still definitely not Boost-compatible).
Think of it this way: At some point it would be nice to have
one, system-wide installed druntime shared library (from any
compiler) and programs compiled with any other compiler should
be able to use it. We've got well-defined name mangling
primarily to allow this - but because of many small differences
mixing compilers is not possible yet.
The biggest of which is probably that GDC and DMD disagree on
parameter passing orders.
— David
