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Re: BUG #16951: pg_restore segfaults on custom format piped from a different version of PG

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: skoposov@ed.ac.uk
Cc: pgsql-bugs@lists.postgresql.org
Date: 2021-03-31T21:27:11Z
Lists: pgsql-bugs 
PG Bug reporting form <noreply@postgresql.org> writes:
> I have a reproducible case of segfaulting pg_restore when trying to restore
> from pg_dump of a different version. Specifically at least pg_restore from
> 10 crashes from pg_dump 12. 

When I try that I get

pg_restore: [archiver] unsupported version (1.14) in file header

and that test is done first thing in ReadHead(), before the place
you identify.  I suspect you are dealing with a corrupt archive
file, not a version mismatch.

			regards, tom lane

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Fix pg_restore's misdesigned code for detecting archive file format.