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Commitf463de5

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In psql, avoid leaking a PGresult after a query is cancelled.
After a query cancel, the tail end of ExecQueryAndProcessResultstook care to clear any not-yet-read PGresults; but it forgot aboutthe one it has already read. There would only be such a resultwhen handling a multi-command string made with "\;", so that you'dhave to cancel an earlier command in such a string to reach thebug at all. Even then, there would only be leakage of a singlePGresult per cancel, so it's not surprising nobody noticed this.But a leak is a leak.Noted while re-reviewing90f5178, but this is independent of that:it dates to7844c99. Back-patch to v15 where that came in.
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‎src/bin/psql/common.c

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@@ -1812,6 +1812,8 @@ ExecQueryAndProcessResults(const char *query,
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if (cancel_pressed)
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{
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/* drop this next result, as well as any others not yet read */
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ClearOrSaveResult(result);
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ClearOrSaveAllResults();
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break;
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}

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