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extfs 7z parser is incompatible with newer 7z releases #5124
Description
Is there an existing issue for this?
- I have searched the existing issues
Midnight Commander version and build configuration
mc -V
GNU Midnight Commander 4.8.33
Built with GLib 2.87.0
Built with S-Lang 2.3.3 with terminfo database
With builtin editor
With subshell support as default
With support for background operations
With mouse support on xterm and Linux console
With internationalization support
With multiple codepages support
With ext2fs attributes support
Virtual File Systems:
cpiofs, tarfs, sfs, extfs, ftpfs, shell
Data types:
char: 8; int: 32; long: 64; void *: 64; size_t: 64; off_t: 64; uintmax_t: 64;Operating system
Fedora 44 (fully up to date)Is this issue reproducible using the latest version of Midnight Commander?
- I confirm the issue is still reproducible with the latest version of Midnight Commander
How to reproduce
Enter the archive:
(rename to 7z as 7z uploads are not supported here).
Expected behavior
MC entering the archive and showing its contents.
Actual behavior
ERROR: /tmp/stale.7z : Cannot open the file as archive
Additional context
Using:
7-Zip 25.01 (x64) : Copyright (c) 1999-2025 Igor Pavlov : 2025-08-03
64-bit locale=en_US.UTF-8 Threads:16 OPEN_MAX:1024
Activity
237dmitry commentedon Jun 10, 2026
This is an old version
Your stale.7z was opened as expected
birdie-github commentedon Jun 10, 2026
I swear I couldn't open it before and now it opens just fine.