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	Wed, 13 Oct 2021 10:28:55 -0400
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alvaro Herrera <alvherre@alvh.no-ip.org>
cc: bernddorn@gmail.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17227: segmentation fault with jsonb_to_recordset
In-reply-to: <202110131359.a6m35hpudkg7@alvherre.pgsql>
References: <202110131359.a6m35hpudkg7@alvherre.pgsql>
Comments: In-reply-to Alvaro Herrera <alvherre@alvh.no-ip.org>
	message dated "Wed, 13 Oct 2021 10:59:06 -0300"
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Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> Can you provide some sample data that would reproduce the crash?

Huh?  It's a self-contained example.  I'm seeing this back-trace
on HEAD:

#0  pg_detoast_datum (datum=3D0x40) at fmgr.c:1724
#1  0x00000000008a2c9a in jsonb_path_query_array_internal (fcinfo=3D0x1976=
7d8, =

    tz=3D<optimized out>) at jsonpath_exec.c:463
#2  0x00000000006ab46e in ExecInterpExpr (state=3D0x19766e8, econtext=3D0x=
1976560, =

    isnull=3D<optimized out>) at execExprInterp.c:1260
#3  0x00000000006b8c04 in ExecEvalExpr (isNull=3D0x1991688, econtext=3D0x1=
976560, =

    state=3D<optimized out>) at ../../../src/include/executor/executor.h:3=
20
#4  ExecEvalFuncArgs (fcinfo=3D0x1991660, argList=3D0x198dd78, econtext=3D=
0x1976560)
    at execSRF.c:846
#5  0x00000000006b8f42 in ExecMakeTableFunctionResult (setexpr=3D0x1976650=
, =

    econtext=3D0x1976560, argContext=3D0x1991540, expectedDesc=3D0x198de28=
, =

    randomAccess=3Dfalse) at execSRF.c:181
#6  0x00000000006cb5ef in FunctionNext (node=3Dnode@entry=3D0x1976348)
    at nodeFunctionscan.c:94
#7  0x00000000006b9b91 in ExecScanFetch (
    recheckMtd=3D0x6cb2e0 <FunctionRecheck>, accessMtd=3D0x6cb2f0 <Functio=
nNext>, =

    node=3D0x1976348) at execScan.c:133
#8  ExecScan (node=3D0x1976348, accessMtd=3D0x6cb2f0 <FunctionNext>, =

    recheckMtd=3D0x6cb2e0 <FunctionRecheck>) at execScan.c:182
#9  0x00000000006e06d4 in ExecProcNode (node=3D0x1976348)
    at ../../../src/include/executor/executor.h:257
#10 ExecNestLoop (pstate=3D0x1975060) at nodeNestloop.c:160

			regards, tom lane