Timeout gets unset on a syntax error.

On a particular query, I start an alarm (say for 5 sec) using RegisterTimeout , and when the alarm rings, I log something.
This works fine.
But if I run a query with a syntax error between the time duration, then the alarm never rings.
Is there some code within Postgres that resets/removes the signals in case a query hits any error?
TimeoutId timer = RegisterTimeout(USER_TIMEOUT,interval_handler);
enable_timeout_after(timer, 5 * 1000);

Thanks,
Ishan.

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