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Bug #75588 Segmentation fault with recursive class constant definition
Submitted: 2017-11-29 10:51 UTC Modified: 2018-05-05 21:49 UTC
From: diacomltd at mail dot ru Assigned:
Status: No Feedback Package: Scripting Engine problem
PHP Version: 7.1.12 OS: any
Private report: No CVE-ID: None
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 [2017-11-29 10:51 UTC] diacomltd at mail dot ru
PHP interpreter stops with segmentation fault when it comes into recursive class constant definition.

Test script:

class SomeConstants

Expected result:
It would be better if PHP interpreter stopped with helpful error message about recursive definition.

Actual result:
Nov 28 19:04:00 homestead kernel: [  194.868150] traps: php-fpm7.1[2753] general protection ip:565383b93854 sp:7fffcdf87b30 error:0 in php-fpm7.1[565383958000+3cf000]


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 [2017-11-29 11:03 UTC]
-Status: Open +Status: Feedback
 [2017-11-29 11:03 UTC]
This throws an exception in all recent versions of PHP:

Also, the code as you wrote it will never even start to recurse, as the constant is never used.

Can you please double-check that there is no additional code required to trigger the crash? Also, can you try running using "php -n" to check whether an extension is responsible for the different behavior?
 [2018-05-05 21:49 UTC]
-Status: Feedback +Status: No Feedback
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