Folks,

I'd like to know the general opinion on this:

https://llvm.org/bugs/show_bug.cgi?id=23529

From past experience, and my limited point of view, it seems that the
GCC community decided to change the ABI, plotted some runes, conjured
up a broken implementation (whose bugs people will exploit and GCC
will end up keeping them) and pushed distros to follow.

I don't know how much distros were involved in the original design.
Did they request the changes? Or was that an internal change? How do
you guys get to decide when to break the world?

I also don't know how will be your policy towards the bugs that people
started "using". Are you going to force them moving to a more sane
implementation (by issuing compiler/linker errors) or are you going to
support as legacy for the decades to come?

Is there a detailed document describing all the changes, and is the
GCC implementation following that to the letter, or are there still
bugs in the current version? I'm not talking about an email thread,
but an actual document on GCC's docs pages.

All I know is that people in the Clang community waited until GCC's
implementation was stable, but somehow Debian based distros started
moving as if there was something unholy about the previous ABI, and
we've been getting segmentation faults on Hello World!

I don't know much about the changes myself, nor I was involved in the
discussion, but this is now a major pain for release 3.8.0 and I
thought it would be better if I sent an email to Linaro folks and
members (which form most of the ARM GNU developers) instead of going
on the main lists.

That also gives me a bit more freedom to be more candid. I wouldn't
send those questions as they are to the GCC/binutils lists, or people
would kill me. I don't mean any of them as an offence, they are
genuine questions from someone that is not on top of that issue.

cheers,
--renato
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