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From: =?utf-8?B?Y2NhNTUwNw==?= <[email protected]>
To: =?utf-8?B?cGdzcWwtaGFja2Vycw==?= <[email protected]>
To: =?utf-8?B?ZGFuaWVs?= <[email protected]>
Subject: Unexpected message truncation in WaitForAllTransactionsToFinish
Date: Fri, 5 Jun 2026 16:30:51 +0800
Message-ID: <[email protected]> (raw)

Hi,

In WaitForAllTransactionsToFinish():

```
		char		activity[64];
		int			rc;

		/* Oldest running xid is older than us, so wait */
		snprintf(activity,
				 sizeof(activity),
				 "Waiting for current transactions to finish (waiting for %u)",
				 waitforxid);
		pgstat_report_activity(STATE_RUNNING, activity);
```

The buffer is not big enough to hold the message if the 'waitforxid' is too big.

How about changing the message to this:

    "Waiting for transactions older than %u to finish"

--
Regards,
ChangAo Chen

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