Daniel Theophanes b98ffdf859 database/sql: check for nil connRequest.conn before use
The connRequest may return a nil conn value. However in a rare
case that is difficult to test for it was being passed to
DB.putConn without a nil check. This was an error as this
made no sense if the driverConn is nil. This also caused
a panic in putConn.

A test for this would be nice, but didn't find a sane
way to test for this condition.

Fixes #24445

Change-Id: I827316e856788a5a3ced913f129bb5869b7bcf68
Reviewed-on: https://go-review.googlesource.com/102477
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alexey Palazhchenko <alexey.palazhchenko@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-05-10 19:41:08 +00:00
2018-04-14 19:28:37 +00:00
2016-06-01 22:40:04 +00:00
2010-12-06 16:31:59 -05:00
2011-02-19 05:46:20 +11:00

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