Nikita Popov c7a86a38a3 Fix pgsql use after free trying to reuse closed connection ...

When a connection is closed, we also need to remove the hash entry
from the regular_list, as it now points to freed memory. To do this
store a reverse mapping from the connection to the hash string.

It would be nicer to introduce a wrapping structure for the pgsql
link resource that could store the hash (and notices), but that would
require large changes to the extension, so I'm going for a more
minimal fix here.

2019-04-10 12:18:57 +02:00

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