Bug #71179 [Com]: memory limit exhausted when running scss parser from richthegeek

Edit report at https://bugs.php.net/bug.php?id=71179&edit=1

 ID:                 71179
 Comment by:         am05mhz at live dot com
 Reported by:        am05mhz at live dot com
 Summary:            memory limit exhausted when running scss parser from
                     richthegeek
 Status:             Not a bug
 Type:               Bug
 Package:            *General Issues
 Operating System:   windows
 PHP Version:        7.0.1
 Block user comment: N
 Private report:     N

 New Comment:

hi laurence, thanks for responding,

though i did not consult substr function reference, i did consult the php 7 backward compatibility manual.
in that case, i have to report for documentation error, as the changes in substr behavior is not yet documented in the backward incompatible changes, and i failed to see why the change in behavior resulted in memory limit exhausted, as "" is equal to false under loose comparison, but thanks anyway, now i can try do fix something :D

http://php.net/manual/en/migration70.incompatible.php


Previous Comments:
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[2015-12-21 13:47:12] [email protected]

Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

this is due to now:

substr("", 0) will return "" instead of false: http://php.net/manual/en/function.substr.php

I have create an issue in phpsass, hope they will fix it soon, thanks

https://github.com/richthegeek/phpsass/issues/179

------------------------------------------------------------------------
[2015-12-21 11:08:08] am05mhz at live dot com

Description:
------------
memory limit exhausted when using win 10 with PHP 7.0.1 VC14 x64 Thread Safe (2015-Dec-17 00:17:17)

no matter how high I set my memory limit, it will get exhausted, and it only happen when running the php scss parser from richthegeek, sample code provided below.

memory limit I have tried: 128MB, 256MB, 512MB

this does not happen in PHP 5.6 VC11 x64 Thread Safe (2015-Nov-26 04:33:59)
with memory limit 128MB and other supported settings the same (obviously excluding mysql extension)

changes to php.ini:
include_path = ".;S:\php\PEAR"
memory_limit = 512MB

Test script:
---------------
this error only happen when using scss parser from richthegeek
https://github.com/richthegeek/phpsass

require 'SassParser.php';

$options = array(
	'style' => 'nested',
	'cache' => false,
	'syntax' => 'scss',
	'debug' => false,
);

$parser = new SassParser($options);
$css = $parser->toCss($some_big_scss_file);
//note my scss file have around 1000 lines

Expected result:
----------------
scss code should be successfully parsed regardless if there is error in the scss (as like the behavior in php 5.6)

Actual result:
--------------
php stopped the execution with memory limit exhausted

Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 134217736 bytes) in some_path\libraries\script\SassScriptLexer.php on line 118
A PHP Error was encountered

Severity: Error

Message: Allowed memory size of 536870912 bytes exhausted (tried to allocate 134217736 bytes)

Filename: script/SassScriptLexer.php

Line Number: 118

Backtrace:


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Edit this bug report at https://bugs.php.net/bug.php?id=71179&edit=1