Re: [PATCH] Handle out-of-range timestamps in timestamptz_to_str()
Chao Li <li.evan.chao@gmail.com>
From: Chao Li <li.evan.chao@gmail.com>
To: Алена Васильева <gorcom2012@gmail.com>
Cc: pgsql-hackers@postgresql.org
Date: 2025-10-15T09:12:53Z
Lists: pgsql-hackers
> On Oct 15, 2025, at 16:54, Алена Васильева <gorcom2012@gmail.com> wrote: > > Hello, > > The function timestamptz_to_str() in src/bin/pg_waldump/compat.c does not > handle the case when localtime() returns NULL, which can happen for timestamps > that are out of the supported time_t range on some platforms. > > This patch adds a simple check for a NULL return value and ensures that the > function returns a clear error string "(timestamp out of range)" instead of > causing undefined behavior or a crash. > > I think we can just return a static const string, without copying the string into “buf" as the function returns a “const char *”. Best regards, -- Chao Li (Evan) HighGo Software Co., Ltd. https://www.highgo.com/