[Reproducible-builds] Bug#808267: diffoscope: Redundant information in ELF comparisons
Hi Mike, Mike Hommey: > When comparing ELF files, the following commands are used: > - readelf --all > - readelf --debug-dump > - objdump --disassemble --full-contents > > objdump --disassemble --full-contents is actually redundant in itself. For > example, it will dump both an hexdump and a disassembly of the .text section. > It's also redundant with the output of readelf --debug-dump because it does an > hexdump of the .debug_* sections that readelf --debug-dump does a dwarf dump > of. The master branch now compare ELF files section by section. If you could test it and see if there's still redundancies, I would be grateful. Thanks! -- Lunar.''`. lu...@debian.org: :Ⓐ : # apt-get install anarchism `. `'` `- signature.asc Description: Digital signature ___ Reproducible-builds mailing list Reproducible-builds@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/reproducible-builds
[Reproducible-builds] Bug#808267: diffoscope: Redundant information in ELF comparisons
On Mon, Jan 18, 2016 at 07:20:38PM +0100, Jérémy Bobbio wrote:
> Hi Mike,
>
> Mike Hommey:
> > When comparing ELF files, the following commands are used:
> > - readelf --all
> > - readelf --debug-dump
> > - objdump --disassemble --full-contents
> >
> > objdump --disassemble --full-contents is actually redundant in itself. For
> > example, it will dump both an hexdump and a disassembly of the .text
> > section.
> > It's also redundant with the output of readelf --debug-dump because it does
> > an
> > hexdump of the .debug_* sections that readelf --debug-dump does a dwarf dump
> > of.
>
> The master branch now compare ELF files section by section. If you could
> test it and see if there's still redundancies, I would be grateful.
It seems better, but there's still redundancy at least between `readelf
--wide --all` and `readelf --wide --hex-dump
{.symtab,.note.gnu-build-id,.rela.dyn,.rela.plt,.dynamic,.dynsym}` and other
sections ; just check the list of sections in the output of readelf
--all.
Reading the code suggests debug sections would also be redunded between
--debug-dump and --hex-dump for the individual sections, but I haven't
tested with binaries with debuginfo.
Mike
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[Reproducible-builds] Bug#808267: diffoscope: Redundant information in ELF comparisons
Source: diffoscope Version: 43 Severity: normal When comparing ELF files, the following commands are used: - readelf --all - readelf --debug-dump - objdump --disassemble --full-contents objdump --disassemble --full-contents is actually redundant in itself. For example, it will dump both an hexdump and a disassembly of the .text section. It's also redundant with the output of readelf --debug-dump because it does an hexdump of the .debug_* sections that readelf --debug-dump does a dwarf dump of. -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) ___ Reproducible-builds mailing list Reproducible-builds@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/reproducible-builds
[Reproducible-builds] Bug#808267: diffoscope: Redundant information in ELF comparisons
On Fri, Dec 18, 2015 at 10:10:54AM +0900, Mike Hommey wrote: > Source: diffoscope > Version: 43 > Severity: normal > > When comparing ELF files, the following commands are used: > - readelf --all > - readelf --debug-dump > - objdump --disassemble --full-contents > > objdump --disassemble --full-contents is actually redundant in itself. For > example, it will dump both an hexdump and a disassembly of the .text section. > It's also redundant with the output of readelf --debug-dump because it does an > hexdump of the .debug_* sections that readelf --debug-dump does a dwarf dump > of. objdump --disassemble --full-contents also outputs a dump of e.g. .note.gnu.build-id, which is printed out in nicer form in readelf --all. Mike ___ Reproducible-builds mailing list Reproducible-builds@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/reproducible-builds
