On Fri, Jun 05, 2020 at 09:52:09AM +0200, Kevin Kofler wrote:
> I do not see why we should allow yet another special case for Firefox, nor
> why we should let random packages make their own choice of compiler and risk
> running into hidden binary incompatibilities. We have a system compiler for
> a reason.
I'll note that there are some even not really hidden binary
incompatibilities, where LLVM diverges from the psABI for years, it has been
reported and nothing has been changed.
So if a library is built with clang/LLVM and used by GCC built package or
vice versa, one might very well run into those (this is e.g. about passing
std::byte or other scoped enums with char/short underlying type by value, or
in some cases even about passing char/short arguments).
And of course unknown ABI bugs on both sides.
Jakub
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