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Re: Possible NULL pointer deferenced (src/interfaces/libpq/fe-exec.c (line 563) - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Possible NULL pointer deferenced (src/interfaces/libpq/fe-exec.c (line 563)
Date
Msg-id 1862640.1592716590@sss.pgh.pa.us
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In response to Possible NULL pointer deferenced (src/interfaces/libpq/fe-exec.c(line 563)  (Ranier Vilela <ranier.vf@gmail.com>)
Responses Re: Possible NULL pointer deferenced (src/interfaces/libpq/fe-exec.c(line 563)
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Ranier Vilela <ranier.vf@gmail.com> writes:
> The res->curBlock pointer possibly, can be NULL here (line 563).

No, it can't.

To get to that line, nBytes has to be > 0, which means res->spaceLeft
has to be > 0, which cannot happen while res->curBlock is NULL.

            regards, tom lane

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