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Initialize conn->Pfdebug to NULL when creating a connection

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Failing to do this can cause a crash, and I suspect is what has happened
with a buildfarm member reporting mysterious failures.

This is an ancient bug, but I'm not backpatching since evidently nobody
cares about PQtrace in older releases.

Discussion: https://postgr.es/m/3333908.1617227066@sss.pgh.pa.us
This commit is contained in:
Alvaro Herrera 2021-03-31 19:16:58 -03:00
parent a6d3dea8e5
commit aba24b51cc
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src/interfaces/libpq/fe-connect.c
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@ -3952,6 +3952,7 @@ makeEmptyPGconn(void)
conn->verbosity = PQERRORS_DEFAULT;
conn->show_context = PQSHOW_CONTEXT_ERRORS;
conn->sock = PGINVALID_SOCKET;
conn->Pfdebug = NULL;
/*
* We try to send at least 8K at a time, which is the usual size of pipe