uutils / uutils/coreutils

Extra error output when running coreutils command in a yocto build environment

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Rust
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Description

I have installed ubuntu 25.10 and I am doing yocto builds on this machine. The yocto build is using some of the coreutils in the build process.
The problem is that most of them print the error message: couldn't allocate absolute path for 'null'.

Here an extract of the strace output of running the command ls:

2207467 lstat("/usr", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
2207467 lstat("/usr/lib", {st_mode=S_IFDIR|0755, st_size=16384, ...}) = 0
2207467 lstat("/usr/lib/cargo", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
2207467 lstat("/usr/lib/cargo/bin", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
2207467 lstat("/usr/lib/cargo/bin/coreutils", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
2207467 lstat("/usr/lib/cargo/bin/coreutils/locales", 0x7ffdeb6e1d90) = -1 ENOENT (No such file or directory)
2207467 lstat("/usr/lib/cargo/bin/coreutils/locales/ls", 0x7ffdeb6e1d90) = -1 ENOENT (No such file or directory)
2207467 statx(AT_FDCWD, "/usr/lib/cargo/bin/coreutils/locales/ls", AT_STATX_SYNC_AS_STAT, STATX_ALL, 0x7ffdeb6e2040) = -1 ENOENT (No such file or directory)
2207467 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
2207467 rt_sigprocmask(SIG_BLOCK, [HUP USR1 USR2 ALRM TERM CHLD], [], 8) = 0
2207467 write(2, "couldn't allocate absolute path for 'null'.\n", 44) = 44

Creating the following symbolic link, locales -> /usr/share/locales, inside the directory /usr/lib/cargo/bin/coreutils makes this message not printed anymore.

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Research direction

Reproduce the issue by running the coreutils ls command in the described Yocto environment and compare its strace output. Investigate the locales lookup under /usr/lib/cargo/bin/coreutils, including the reported locales -> /usr/share/locales workaround. Done means the spurious "couldn't allocate absolute path for 'null'" output no longer appears without requiring that symlink.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
cli, localization
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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