Package: diffoscope Version: 60 Severity: wishlist Dear Maintainer,
A difference in an ELF binary file can cause offsets throughout the file to shift, usually by all of them by the same amount. Typical example: │ │ │ │ │ ./build/../src/nvim/indent_c.c:658 │ │ │ │ │ - 44436: 48 8d 35 01 77 1c 00 lea 0x1c7701(%rip),%rsi │ │ │ │ │ + 44436: 48 8d 35 f8 76 1c 00 lea 0x1c76f8(%rip),%rsi │ │ │ │ │ ./build/../src/nvim/main.c:749 │ │ │ │ │ 46eea: 48 8b 3c 24 mov (%rsp),%rdi │ │ │ │ │ - 46eee: 48 8d 35 7f 50 1c 00 lea 0x1c507f(%rip),%rsi │ │ │ │ │ + 46eee: 48 8d 35 76 50 1c 00 lea 0x1c5076(%rip),%rsi Here, 0x1c7701-0x1c76f8 = 0x1c507f-0x1c5076 = 9. There are several screenfuls of such differences, which reduces the signal-to-noise ratio of the output, since all of these differences are secondary; the primary difference is whatever caused the 9 bytes shift in the first place. (On this instance, the 9 bytes offset was caused by a string literal being present in the first build but not in the second build.) Could these offset differences in readelf(1) output be ignored, at least optionally? This would make it easier to find the root cause by reading the diff. Cheers, Daniel _______________________________________________ Reproducible-builds mailing list Reproducible-builds@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/reproducible-builds
