[MDL-64975] Function format_float broken when decsep is '~' (tilde) - Moodle Tracker

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Details

Type: Bug
Status: Closed
Priority: Minor
Resolution: Fixed
Affects Version/s: 3.4.5, 3.6, 3.7, 3.8
Fix Version/s: 3.6.5, 3.7.1
Component/s: General
Labels:
- ci
- patch
- triaged

Database:

Any
Testing Instructions:
Hide

Automated testing

Run the automated tests and verify that the format_float test in core_moodlelib_testcase completes with success.

Manual testing

Set decsep to '~' in a language file for your currently enabled language.

Ensure that the change is picked up (by flushing the language strings cache or updating version.php).

Put the following test code into a script file (named mytestscript.php below) and run it with PHP from the command line.

<?php

require('/path/to/config.php'); // causes inclusion of moodlelib.php

echo format_float(1.234, 5, true, true);

Run the script:

php mytestscript.php

Check the test result:

Ensure that you do not see the following warning:

PHP Warning: preg_replace(): Unknown modifier ')' in /path/to/format_float_test.php on line <linenumber>

Verify that you see the following output:
1~234
(No PHP warning message.)
Show
Automated testing Run the automated tests and verify that the format_float test in core_moodlelib_testcase completes with success. Manual testing Set decsep to '~' in a language file for your currently enabled language. Ensure that the change is picked up (by flushing the language strings cache or updating version.php ). Put the following test code into a script file (named mytestscript.php below) and run it with PHP from the command line. <?php require ( '/path/to/config.php' ); // causes inclusion of moodlelib.php echo format_float(1.234, 5, true, true); Run the script: php mytestscript.php Check the test result: Ensure that you do not see the following warning: PHP Warning: preg_replace(): Unknown modifier ')' in /path/to/format_float_test.php on line <linenumber> Verify that you see the following output: 1~234 (No PHP warning message.)
Workaround:

Hide

Do not use a tilde ('~') as the decsep string.

Show
Do not use a tilde ( '~' ) as the decsep string.
Difficulty:
Easy
Affected Branches:
MOODLE_34_STABLE, MOODLE_36_STABLE, MOODLE_37_STABLE, MOODLE_38_STABLE
Fixed Branches:
MOODLE_36_STABLE, MOODLE_37_STABLE
Pull from Repository:
https://github.com/nicoroeser/moodle.git
Pull 3.5 Branch:
~~MDL-64975~~-35
Pull 3.5 Diff URL:
https://github.com/moodle/moodle/compare/MOODLE_35_STABLE...nicoroeser:MDL-64975-35
Pull Master Branch:
~~MDL-64975~~-master
Pull Master Diff URL:
https://github.com/moodle/moodle/compare/master...nicoroeser:MDL-64975-master

Description

Bug description

Function format_float in lib/moodlelib.php does not work properly when the string decsep is set to a tilde character ('~').

First release in which this bug appeared: Moodle 2.3
Introduced in commit: 637da99edbd7258fae20374ed8c890a167f40d30

Source of the problem

Incorrect usage of function preg_quote.

How to fix

Replace

preg_quote($separator)

with

preg_quote($separator, '~')

in function format_float.

Attachments

Activity

People

Assignee:: Nico Roeser

Reporter:: Nico Roeser

Peer reviewer:: Jake Dallimore

Integrator:: Eloy Lafuente (stronk7)

Tester:: CiBoT

Participants:: CiBoT, Eloy Lafuente (stronk7), Jake Dallimore, Nico Roeser

Component watchers:: Adrian Greeve, Jake Dallimore, Mathew May, Mihail Geshoski, Peter Dias, Sujith Haridasan

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 28/Feb/19 6:12 PM

Updated:: 21/Jun/19 12:01 AM

Resolved:: 21/Jun/19 12:01 AM

Fix Release Date:: 8/Jul/19

Time Tracking

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Remaining:

Logged:

1h 15m