Edit report at https://bugs.php.net/bug.php?id=78779&edit=1
ID: 78779
Updated by: nikic@php.net
Reported by: bugreport2 at gmail dot com
Summary: Null Coalescing Operator: Trying to access array
offset on value of type null
-Status: Open
+Status: Feedback
Type: Bug
Package: Scripting Engine problem
Operating System: Linux
PHP Version: 7.4Git-2019-11-04 (Git)
Block user comment: N
Private report: N
New Comment:
Unless there's some working reproduction code for this, I don't think we can do anything
here.
Previous Comments:
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[2019-11-17 11:41:35] cmb@php.net
Opening, since feedback had been provided.
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[2019-11-17 04:22:05] php-bugs at lists dot php dot net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
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[2019-11-05 11:39:36] bugreport2 at gmail dot com
it was triggered by a fuzzy-testsuite on two out of millions of calls :-(
i replaced the offending code path with a construct used all over the codebase which should silence
it as intended
i find it interesting that it's even possible that this warning triggers at all when "Null
Coalescing Operator" is used because there is no point to look at the array offset when the
whole $arr is NULL
- $arr = mysqli_fetch_row($db->query($sql));
- $oldcontent = $arr[0] ?? '';
+ $oldcontent = (string)(mysqli_fetch_row($db->query($sql))[0] ?? '');
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[2019-11-05 11:20:40] nikic@php.net
I can't reproduce this: https://3v4l.org/9NvcY
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[2019-11-04 12:31:12] bugreport2 at gmail dot com
Description:
------------
"Trying to access array offset on value of type null" is new and fully dserved but in
context of "Null Coalescing Operator" it makes no sense
no matter if $arr or $arr[0] is undefined, the left side is NULL and so assign '' and you
are done - probably even potential for optimization
$arr = mysqli_fetch_row($result);
$oldcontent = $arr[0] ?? '';
AUTOTEST ERROR-HANDLER: 'code: 8' 'msg: Trying to access array offset on value of
type null' 'file: misc.php' 'line: 116'
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Edit this bug report at https://bugs.php.net/bug.php?id=78779&edit=1