On Tue, 2025-10-14 at 12:30 +0200, Gregor Riepl wrote: > > > That would be much appreciated, thanks! > > > > I looked at upstream and the project seems to be dead, no changes since > > 2016. > > That's bad, considering that xdelta3 is a dependency of pristine-tar. :/
That was not obvious to me when you wrote this. > > > override_dh_auto_configure: > > > dh_auto_configure $@ -- ax_cv_have_aligned_access_required=yes > > > > Interesting, so it might not be broken at all? > > I cleaned up the debugging code I had added to pristine-tar, installed the > xdelta3 > built with aligned access enforcement, and now the pristine-tar build > finishes successfully. Good. > Oh, and I just found out that the ax_check_aligned_access_required detection > script > will "hide" the unaligned memory access crash if it's compiled with > optimization. > When using -O0, it will crash with a bus error on sparc64, as it should. > It's the same with a more recent version of the script[1]. OK, so the code remains broken. > So, IMHO the cleanest fix should be to compile test script without > optimization, to > ensure it's causing a bus error and correctly detect that the target cpu > requires > aligned memory access. Well, the bus error is well visible when running the xdelta3 testsuite. > > > This makes the bus error go away. The pristine-tar build is still failing, > > > but this might have other reasons. > > > > You mean the unpatched source? > > Sorry, which patch are you referring to? The xdelta3 package has two patches, but they don't patch any C code as I just saw: https://salsa.debian.org/debian/xdelta3/-/tree/master/debian/patches?ref_type=heads But this was also a misunderstanding from my side. Since "pristine-tar" also refers to a Git branch when maintaining package sources with Git, I thought you were referring to the vanilla upstream source. It was not clear to me that you were talking about the "pristine-tar" Debian package. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
