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Subject: BUG #19423: canonicalize_path does not function correctly when processing paths that contain . and ..
To: pgsql-bugs@lists.postgresql.org
From: PG Bug reporting form <noreply@postgresql.org>
Cc: 1003931418@qq.com
Reply-To: 1003931418@qq.com, pgsql-bugs@lists.postgresql.org
Date: Tue, 03 Mar 2026 07:27:44 +0000
Message-ID: <19423-a45c4524977e1704@postgresql.org>
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The following bug has been logged on the website:

Bug reference:      19423
Logged by:          SHIQI LI
Email address:      1003931418@qq.com
PostgreSQL version: 14.22
Operating system:   linux
Description:       =20

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