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authorDaniel Theophanes <kardianos@gmail.com>2018-01-25 10:50:02 -0800
committerDaniel Theophanes <kardianos@gmail.com>2018-01-25 19:14:14 +0000
commit651ddbdb5056ded455f47f9c494c67b389622a47 (patch)
tree5dba249d72c82a175e85ea71b95824348566c70f /doc/go1.10.html
parent7350297eb61e71c901504d132b1d9077a11f57f6 (diff)
downloadgo-git-651ddbdb5056ded455f47f9c494c67b389622a47.tar.gz
database/sql: buffers provided to Rows.Next should not be modified by drivers
Previously we allowed drivers to modify the row buffer used to scan values when closing Rows. This is no longer acceptable and can lead to data races. Fixes #23519 Change-Id: I91820a6266ffe52f95f40bb47307d375727715af Reviewed-on: https://go-review.googlesource.com/89936 Run-TryBot: Daniel Theophanes <kardianos@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
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@@ -814,6 +814,13 @@ formats the X.509 distinguished name in the standard RFC 2253 format.
<dl id="database/sql/driver"><dt><a href="/pkg/database/sql/driver/">database/sql/driver</a></dt>
<dd>
<p>
+Drivers that currently hold on to the destination buffer provdied by
+<a href="/pkg/database/sql/driver/#Rows.Next"><code>driver.Rows.Next</code></a> should ensure they no longer
+write to a buffer assignedd to the destination array outside of that call.
+Drivers must be careful that underlying buffers are not modified when closing
+<a href="/pkg/database/sql/driver/#Rows"><code>driver.Rows</code></a>.
+</p>
+<p>
Drivers that want to construct a <a href="/pkg/database/sql/#DB"><code>sql.DB</code></a> for
their clients can now implement the <a href="/pkg/database/sql/driver/#Connector"><code>Connector</code></a> interface
and call the new <a href="/pkg/database/sql/#OpenDB"><code>sql.OpenDB</code></a> function,