Hello everyone.
I just learnt a foreach syntax from `src/tests/json_array_looping.sh`, so I
try to parse my logdata(yes, long json array in msg) as follow:
```
$MaxMessageSize 256k
template( name="local6JsonArray" type="string" string="%$.line%\n" )
Ruleset( name="forwardRuleSetJsonArray" )
{
action( type="mmjsonparse" )
foreach ($.line in $!msg) do {
action ( type="omfile" file="/data0/logfile"
template="local6JsonArray")
}
}
```
But I always got segment fault after restarted few minutes.
Before the rsyslogd died , I can watch some correct lines in the
"/data0/logfile".
While running `rsyslogd -dn`, I watch the last five lines were:
```
3295.820218609:main Q:Reg/w0 : FOREACH .line IN
3295.820227632:main Q:Reg/w0 : var '!msg'
3295.820240109:main Q:Reg/w0 : eval expr 0x7fe2044fefa0, type 'V[86]'
3295.821747011:main Q:Reg/w0 : rainerscript: var 200:!msg: '{"msg":[{
"end_time":"142...longmsghere....\"verieval expr 0x7fe2044fefa0, return
datatype 'J'
```
The length of such line is about 20k~30k, far away below my $MaxMessageSize.
So, why rsyslogd segment fault?
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