Edit report at https://bugs.php.net/bug.php?id=65317&edit=1

 ID:                 65317
 Updated by:         tyr...@php.net
 Reported by:        tyr...@php.net
 Summary:            spl autoload won't work inside an autoload
-Status:             Open
+Status:             Duplicate
 Type:               Bug
 Package:            Scripting Engine problem
 Operating System:   linux
 PHP Version:        5.4.17
 Block user comment: N
 Private report:     N

 New Comment:

I've created a new report with the updated info and testcase to avoid 
confusion, 
see https://bugs.php.net/bug.php?id=65322


Previous Comments:
------------------------------------------------------------------------
[2013-07-23 17:29:32] tyr...@php.net

Btw. isn't the fact that the error handler is called proves that the compiler 
is eiher reentrants or 
that the compilation is done?

------------------------------------------------------------------------
[2013-07-23 17:13:58] tyr...@php.net

hm, that explains why nobody really reported it.
as far as I can remember most compile time errors are fatal which won't trigger 
the error handler anyways, and the others are E_STRICT, which wasn't really 
used 
before we included it to E_ALL in 5.4.
maybe we should reconsider adding new compile time non-fatal errors until we 
can 
properly support it?

------------------------------------------------------------------------
[2013-07-23 17:09:26] larue...@php.net

my previous comment is not right.

it real reason is here, in (zend_lookup_class_ex):


    /* The compiler is not-reentrant. Make sure we __autoload() only during run-
time
     * (doesn't impact fuctionality of __autoload()
    */
    if (!use_autoload || zend_is_compiling(TSRMLS_C)) {
        if (!key) {
            free_alloca(lc_free, use_heap);
        }
        return FAILURE;
    }


so, the error is trigged in compiling MyAbstract... 

so is in compile time...

so,,

------------------------------------------------------------------------
[2013-07-23 17:05:35] tyr...@php.net

it was introduced by Dmitry:
http://git.php.net/?p=php-
src.git;a=commitdiff;h=9305339d94c701e8eda93dbf0231d70918ef4a6a
"Changed "instanceof" and "catch" operators, is_a() and is_subclass_of() 
functions to not call __autoload()."

so nothing about generic recursion protection or explicitly talking about calls 
from another autloader method.
I would guess this specific scenario wasn't really intentional, but let's ask 
Dmitry about his thoughts.

Personally I think that it is rather surprising and unintuitive and it was a 
little bit tricky to figure it out why the code didn't worked as I've expected.

------------------------------------------------------------------------
[2013-07-23 16:51:46] larue...@php.net

Hey, it should be a intention behavior:


zend_class_entry *zend_fetch_class_by_name(const char *class_name, uint 
class_name_len, const zend_literal *key, int fetch_type TSRMLS_DC) /* {{{ */
{
    zend_class_entry **pce;
    int use_autoload = (fetch_type & ZEND_FETCH_CLASS_NO_AUTOLOAD) == 0;


it seems try to prevent some recursive autoload, then stack overflow 

so.... won't fix IMO (it's really a edge case :))

maybe document it instead?

thanks

------------------------------------------------------------------------


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