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Re: Assert triggered during RE_compile_and_cache - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Assert triggered during RE_compile_and_cache
Date
Msg-id 2442241.1628208783@sss.pgh.pa.us
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In response to Re: Assert triggered during RE_compile_and_cache  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Assert triggered during RE_compile_and_cache  (Tom Lane <tgl@sss.pgh.pa.us>)
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I wrote:
> Hm.  I thought that this might be an old issue, but I'm not seeing the
> crash in pre-v14 branches.  That means it's some bug introduced in
> the performance improvements I did a few months ago.  Open item added.

git bisect says the trouble started with

ea1268f6301cc7adce571cc9c5ebe8d9342a2ef4 is the first bad commit
commit ea1268f6301cc7adce571cc9c5ebe8d9342a2ef4
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date:   Sat Feb 20 19:26:41 2021 -0500

    Avoid generating extra subre tree nodes for capturing parentheses.

I probably won't be able to dig deeper for a little while.

            regards, tom lane

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