This is an automated email from the git hooks/post-receive script. guillem pushed a commit to branch main in repository dpkg.
View the commit online: https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=f9792596d17df93ce44ab71dd0abb2ba9aad8f27 commit f9792596d17df93ce44ab71dd0abb2ba9aad8f27 Author: Guillem Jover <[email protected]> AuthorDate: Mon Dec 19 01:49:12 2022 +0100 libdpkg: On threads-max > 0 pass --no-adjust to xz to force threaded mode If xz cannot meet the memory usage limit on multi-threaded mode, then it can end up falling back to single-threaded mode, which would then generate different output, making it non-reproducible. This has the drawback that it can then error out. --- lib/dpkg/compress.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/dpkg/compress.c b/lib/dpkg/compress.c index 7627f589d..2bf84558e 100644 --- a/lib/dpkg/compress.c +++ b/lib/dpkg/compress.c @@ -793,6 +793,10 @@ compress_xz(struct compress_params *params, int fd_in, int fd_out, command_add_arg(&cmd, "-e"); if (params->threads_max > 0) { + /* Do not let xz fallback to single-threaded mode, to avoid + * non-reproducible output. */ + command_add_arg(&cmd, "--no-adjust"); + /* The xz -T1 option selects a single-threaded mode which * generates different output than in multi-threaded mode. * To avoid the non-reproducible output we pass -T+1 -- Dpkg.Org's dpkg
