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Problematic getTrace() recursion

 
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conner_bw
Smarty Rookie


Joined: 21 Dec 2007
Posts: 17
PostPosted: Mon Oct 17, 2011 7:22 pm    Post subject: Problematic getTrace() recursion Reply with quote
Hi,

I just upgraded from Smarty 3.0.8 to 3.1.3. This behaviour wasn't happening before. To show the problem, modify the /demo/index.php file to look something like this:

Code:

<?php
/**
* Example Application

* @package Example-application
*/

try {
   
    require('../libs/Smarty.class.php');

    $smarty = new Smarty;

    //$smarty->force_compile = true;
    $smarty->debugging = true;
    $smarty->caching = true;
    $smarty->cache_lifetime = 120;

    $smarty->assign("Name","Fred Irving Johnathan Bradley Peppergill",true);
 
    // [... snip ...]

    $smarty->display('index.tpl');
}
catch (Exception $e) {

    $message = 'Error: ';
    $message .= $e->getMessage() . "\n";
    $message .= "File: " . $e->getFile() . "\n";
    $message .= "Line: " . $e->getLine() . "\n\n";
    $message .= "Backtrace: \n" . print_r($e->getTrace(), true) . "\n\n";

    if (!headers_sent()) header('Content-Type: text/plain');
    die($message);
}

?>


Then, make a typo in the template. Example, change:

Code:

{#title#|capitalize}


To:

Code:

{#title#|foo}


Then, reload. The output of getTrace() is over 21300 lines. Sad

This is unhelpful and a resource hog when debugging. It would be good to get the more terse results from 3.0.8 back.

Thank you for your consideration.

Regards,
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U.Tews
Administrator


Joined: 22 Nov 2006
Posts: 5068
Location: Hamburg / Germany
PostPosted: Mon Oct 17, 2011 8:07 pm    Post subject: Reply with quote
This is not a bug but caused by a different object structure of Smarty 3.1.

$e->getTrace() does follow every possible object pointer and dump the properties of each pointer found.

I doubt if this kind of output is helpfull at all and you are not better use $e->getTraceAsString() to display just the call stack.
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conner_bw
Smarty Rookie


Joined: 21 Dec 2007
Posts: 17
PostPosted: Tue Oct 18, 2011 3:06 pm    Post subject: Reply with quote
U.Tews wrote:

I doubt if this kind of output is helpfull at all and you are not better use $e->getTraceAsString() to display just the call stack.


Terrific, thanks. This will do.
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