| From: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, John Naylor <john(dot)naylor(at)2ndquadrant(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Nikita Glukhov <n(dot)gluhov(at)postgrespro(dot)ru>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Oleg Bartunov <obartunov(at)postgrespro(dot)ru>, Michael Paquier <michael(at)paquier(dot)xyz>, Stas Kelvich <s(dot)kelvich(at)postgrespro(dot)ru>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, David Steele <david(at)pgmasters(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Subject: | Re: jsonpath |
| Date: | 2019-03-28 13:33:44 |
| Message-ID: | CAPpHfdvsRmPuVxWXUENjY+8PEDQ9t1nCGaa5UCj1gMPsV+SgKA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Mar 28, 2019 at 4:31 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Andrew Dunstan <andrew(dot)dunstan(at)2ndquadrant(dot)com> writes:
> > I mean repeated invocations of
> > psql -c "select '$ ? (@ like_regex \"pattern\" flag \"a\")'::jsonpath"
> > These get crash, no crash, crash, no crash ...
>
> That is just wacko ... but it does seem to support my thought of
> a wild store somewhere. The mechanism for this case might be
> that memory layout is different depending on whether we had to
> rebuild the relcache init file at session start or not. Similarly,
> the fact that the full test script reliably crashes might be
> dependent on previous commands having left things in a certain
> state. Unfortunately that gets us little closer to a fix.
>
> Has anybody gotten through a valgrind run on this code yet?
I've [1]. Find single backtrace, but it doesn't seem to be related to
our issue.
------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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