Re: v16dev: TRAP: failed Assert("size > SizeOfXLogRecord"), File: "xlog.c", Line: 1055, PID: 13564

Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
> On Mon, Apr 17, 2023 at 01:50:30PM -0400, Tom Lane wrote:
>> Bingo: bisecting shows the failure started at

> Just curious: what "test" did you use to bisect with ?

The test case I used looked like

start postmaster with -c wal_level=minimal -c max_wal_senders=0
make installcheck-parallel
psql -d regression -c "do 'begin for i in 1..1000 loop execute ''create table lots''||i||'' as select * from onek''; end loop; end';"
pg_dump -Fc -Z0 regression >~/regression.dump
createdb r2
pg_restore -d r2 --single-transaction --no-tablespace ~/regression.dump

Dumping the regression database as-is didn't reproduce it for me,
but after I added a bunch more tables it did reproduce.

(I added the -Z0 bit after some of the bisection test points hit the
interval where somebody had broken pg_dump's compression features.
It didn't seem relevant to the problem so I just disabled that.)

regards, tom lane