Hi Renato, On 20 January 2016 at 12:38, Renato Golin <renato.go...@linaro.org> wrote: > 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.
I don't know well the abi_tag story, and will have to dig in the discussions to give you an answer, but you might find some answers in Jason's blog: http://developerblog.redhat.com/2015/02/05/gcc5-and-the-c11-abi/ Cheers, Yvan > cheers, > --renato > _______________________________________________ > linaro-toolchain mailing list > linaro-toolchain@lists.linaro.org > https://lists.linaro.org/mailman/listinfo/linaro-toolchain _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
