On Wed, Jul 09, 2014 at 02:19:36PM -0400, David Edelsohn wrote: > > This is an ABI change for the affected corner cases of the ELFv2 > > ABI. However, those cases should be extremely rare; the full > > compat.exe and struct-layout-1.exp ABI compatibility test suite > > passed, with the exception of two tests specifically intended > > to test multiple homogeneous float aggregates. > > > > Tested on powerpc64le-linux. > > > > OK for mainline? > > [ The patch should then also go into the 4.8 and 4.9 branches for > > consistency. ] > > Okay everywhere.
IMHO it should only go to the trunk, same as https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00540.html (see also related PRs, has been discussed on IRC too). If it is a corner case, the better, fewer people will be affected when transitioning from 4.9.x to 5.0 (or 4.10?). But 4.9.0 is for a few months in the wild already, I don't think ABI changes are something people would like to see between 4.9.0 and 4.9.1 or any other patchlevel revision, most people aren't prepared to rebuild the world just because they have upgraded to a newer compiler snapshot or new patchlevel version. Jakub
