public inbox for [email protected]  

help / color / mirror / Atom feed

From: Tom Lane <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: Re: BUG #19423: canonicalize_path does not function correctly when processing paths that contain . and ..
Date: Tue, 03 Mar 2026 09:28:24 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

PG Bug reporting form <[email protected]> writes:
> When the input parameter path of the function is
> /tmp/root_hack4_test_tablespace/./../../test, the expected result after
> processing by canonicalize_path is /test, but the actual result remains
> /tmp/root_hack4_test_tablespace/./../../test.

AFAICT it does what you're expecting in v15 and later.  The previous
implementation did not promise to clean up '.' and '..' everywhere;
it only said

  *            o  remove trailing '.'
  *            o  process trailing '..' ourselves

> The implementation of this function differs significantly between version
> 14, version 15, and later versions.

See commit c10f830c511f0ba3e6f4c9d99f444d39e30440c8, particularly
the commit message's explanation of why not back-patch it.

			regards, tom lane

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected]
  Subject: Re: BUG #19423: canonicalize_path does not function correctly when processing paths that contain . and ..
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox