PHP :: Bug #77514 :: mb_ereg_replace() with trailing backslash adds null byte

Bug #77514	mb_ereg_replace() with trailing backslash adds null byte
Submitted:	2019-01-24 12:53 UTC	Modified:	2019-01-24 14:19 UTC
From:	legale dot legale at gmail dot com	Assigned:	nikic (profile)
Status:	Closed	Package:	mbstring related
PHP Version:	7.3.1	OS:	linux
Private report:	No	CVE-ID:	None

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[2019-01-24 12:53 UTC] legale dot legale at gmail dot com

Description:
------------
Function returns incorrect result.

Test script:
---------------
<?php
$a="abc123";
echo unpack("H*", mb_ereg_replace("123","def\\",$a))[1];
echo PHP_EOL;



Expected result:
----------------
61626364655c

Actual result:
--------------
61626364655c00

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[2019-01-24 13:07 UTC] cmb@php.net

-Status: Open +Status: Verified -Package: *Extensibility Functions +Package: mbstring related

[2019-01-24 13:07 UTC] cmb@php.net

Confirmed: <https://3v4l.org/PHfJA>.

[2019-01-24 14:18 UTC] nikic@php.net

-Status: Verified +Status: Assigned -Assigned To: +Assigned To: nikic

[2019-01-24 14:19 UTC] nikic@php.net

-Summary: mb_ereg_replace() bug +Summary: mb_ereg_replace() with trailing backslash adds null byte

[2019-01-24 14:24 UTC] nikic@php.net

Automatic comment on behalf of nikita.ppv@gmail.com
Revision: http://git.php.net/?p=php-src.git;a=commit;h=3c98c2d0cbf476432a4fa6264afc5e43c58fb38f
Log: Fixed bug #77514

[2019-01-24 14:24 UTC] nikic@php.net

-Status: Assigned +Status: Closed

[2019-02-02 19:01 UTC] cmb@php.net

Related To: Bug #77558

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