Weird engine problem

Hello Sebastian,

Wednesday, September 22, 2004, 9:52:18 PM, you wrote:

For quite a while I have been fighting with what I believe to be a bug in
the Zend Engine 2.

In PHPUnit2 I have the following code:

public function run(PHPUnit2_Framework_Test $test) {
// $test->name: string(14) "testGetBalance"
$this->startTest($test);

   try {
       // $test->name: string(14) "testGetBalance"
       $test->runBare();
   }

   catch (PHPUnit2_Framework_AssertionFailedError $e) {
       // $test->name: string(14) "testgetbalance"
       $this->addFailure($test, $e);
   }

   catch (Exception $e) {
       // $test->name: string(14) "testgetbalance"
       $this->addError($test, $e);
   }

   // $test->name: string(14) "testgetbalance"
   $this->endTest($test);

}

The object referenced by the variable $test has a private attribute
called "name". The value of this attribute somehow get lowercased
when the object is used inside the catch-block.

My effort to come up with a small, reproducing script for this issue
has yet to bear fruit as the obvious approach

<?php
class Foo {
private $bar = 'BAR';
}

class Bar {
public function doSomething(Foo $foo) {
var_dump($foo);

       try {
           var_dump($foo);
           throw new Exception('...');
       }

       catch (Exception $e) {
           var_dump($foo);
       }

       var_dump($foo);
   }

}

$f = new Foo;
$b = new Bar;
$b->doSomething($f);
?>

does not show the problem.

Any idea what I might be missing here? Is there some way to debug the
engine to see where the lowercasing happens?

Thanks!

--
Sebastian Bergmann http://www.sebastian-bergmann.de/
GnuPG Key: 0xB85B5D69 / 27A7 2B14 09E4 98CD 6277 0E5B 6867 C514 B85B 5D69

Disallow inlining and set a breakpoint on zend_str_tolower_copy() is most
likely responsible for downcasing if the engine is the problem....

Best regards,
Marcus mailto:helly@php.net

Sebastian Bergmann wrote:

In PHPUnit2 I have the following code:

It seems that I have been at slightly the wrong code

try {
$class = new ReflectionClass($this);
var_dump($this);
$method = $class->getMethod($this->name);
var_dump($this);
exit;
}

object(BankAccountTest)#38 (2) {
["codeCoverageInformation:private"]=>
array(0) {
}
["name:private"]=>
string(14) "testGetBalance"
}
object(BankAccountTest)#38 (2) {
["codeCoverageInformation:private"]=>
array(0) {
}
["name:private"]=>
string(14) "testgetbalance"
}

So it looks like calling getMethod() on a ReflectionClass object for
the current object lowercases the contents of the variable that is
passed to it.

Hardcoding the getMethod() parameter prevents the lowercasing

try {
$class = new ReflectionClass($this);
var_dump($this);
$method = $class->getMethod('testGetBalance');
var_dump($this);
exit;
}

object(BankAccountTest)#38 (2) {
["codeCoverageInformation:private"]=>
array(0) {
}
["name:private"]=>
string(14) "testGetBalance"
}
object(BankAccountTest)#38 (2) {
["codeCoverageInformation:private"]=>
array(0) {
}
["name:private"]=>
string(14) "testGetBalance"
}

while copying the value from $this->name to $name and passing that to
getMethod() does not

try {
$class = new ReflectionClass($this);
var_dump($this);
$name = $this->name;
$method = $class->getMethod($name);
var_dump($this);
exit;
}

object(BankAccountTest)#38 (2) {
["codeCoverageInformation:private"]=>
array(0) {
}
["name:private"]=>
string(14) "testGetBalance"
}
object(BankAccountTest)#38 (2) {
["codeCoverageInformation:private"]=>
array(0) {
}
["name:private"]=>
string(14) "testgetbalance"
}

Sorry for these lengthy mails but this issue is important to me as it
hinders the development of PHPUnit2.

--
Sebastian Bergmann http://www.sebastian-bergmann.de/
GnuPG Key: 0xB85B5D69 / 27A7 2B14 09E4 98CD 6277 0E5B 6867 C514 B85B 5D69