rm could malfunction under unusual circumstances:

rm could malfunction under unusual circumstances:

When operating on a relative name longer than 511 bytes,
and (when either processing a directory that is neither writable
nor readable (but still searchable) or when determining whether
to prompt), and encountering an ENOMEM error while forming the
file name, rm would operate on a truncated-to-511-byte name
starting with "[...]" rather than the intended one.
* NEWS: Describe the bugs.
* src/remove.c: Correct two misuses of full_filename:
(full_filename0, xfull_filename): New functions.
(full_filename_): Rewrite to use full_filename0.
(AD_pop_and_chdir): Use xfull_filename, not full_filename.
(write_protected_non_symlink): Likewise.