Re: Error-safe user functions

Ted Yu <yuzhihong@gmail.com> writes:
> On Fri, Dec 23, 2022 at 1:22 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Yes, it is.  We don't want a query-cancel transformed into a soft error.

> The same regex, without user interruption, would exhibit an `invalid
> regular expression` error.

On what grounds do you claim that?  The timing of arrival of the SIGINT
is basically chance --- it might happen while we're inside backend/regex,
or not.  I mean, sure you could claim that a bad regex might run a long
time and thereby be more likely to cause the user to issue a query
cancel, but that's a stretched line of reasoning.

            regards, tom lane