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Stack overflow detection not working for property chains #17623

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iluuu1994 opened this issue Jan 29, 2025 · 0 comments
Closed

Stack overflow detection not working for property chains #17623

iluuu1994 opened this issue Jan 29, 2025 · 0 comments
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Bug Category: Engine Status: Verified

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@iluuu1994
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Description

Originally reported by @abdullahasif88.

$test
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
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    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
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    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
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    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
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    ->p->p->p->p->p->p->p->p->p->p
    ->p->p->p->p->p->p->p->p->p->p
;

Resulted in this output:

Segfault

But I expected this output instead:

Maximum call stack size of %d bytes (zend.max_allowed_stack_size - zend.reserved_stack_size) reached during compilation. Try splitting expression

PHP Version

8.3+

Operating System

No response
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Fix stack overflow detection for variable compilation iluuu1994/php-src
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@iluuu1994 @cmb69