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Bug #61936 GDB ____executor_globals fails when EG/CG symbol may not visible in some module
Submitted: 2012-05-04 03:57 UTC Modified: 2012-05-08 09:08 UTC
From: reeze dot xia at gmail dot com Assigned:
Status: Not a bug Package: *General Issues
PHP Version: Irrelevant OS: *Nix
Private report: No CVE-ID: None
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From: reeze dot xia at gmail dot com
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 [2012-05-04 03:57 UTC] reeze dot xia at gmail dot com 
Description:
------------
when debug using GDB, sometime ____executor_globals failed to execute 
because in some module eg:zend_gc.c did have zend_executor_global exposed(Only ZTS 
model affected，since executor_globals always available).

Test script:
---------------
(gdb) b gc_zval_possible_root
Breakpoint 1 at 0x1005aa7d0: file zend_gc.c, line 132.
(gdb) r circle.php 
Starting program: /Users/reeze/Opensource/php-src/sapi/cli/php circle.php
Reading symbols for shared libraries ++++++.......................... done

Breakpoint 1, gc_zval_possible_root (zv=0x100dcbb58, tsrm_ls=0x100e009b0) at zend_gc.c:132
warning: Source file is more recent than executable.
132		if (UNEXPECTED(GC_G(free_list) != NULL &&
(gdb) printzv zv
No symbol "zend_executor_globals" in current context.

Expected result:
----------------
print zval correctly

Actual result:
--------------
No symbol "zend_executor_globals" in current context.

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 [2012-05-04 04:03 UTC] reeze dot xia at gmail dot com 
Hi, 
  I've sent a pull request. open this bug ticket just for record.

see https://github.com/php/php-src/pull/74/

Thanks.
 [2012-05-04 04:13 UTC] reeze dot xia at gmail dot com 
sorry I missed " in non-ZTS build " after "affected，since executor_globals always 
available)."

It's: "Only ZTS build affected，since executor_globals/compiler_globals always 
available in non-ZTS build"
 [2012-05-04 23:01 UTC] felipe@php.net
-Summary: GDB：____executor_globals fails when EG/CG symbol may not visible in some modul +Summary: GDB ____executor_globals fails when EG/CG symbol may not visible in some modul
 [2012-05-04 23:01 UTC] felipe@php.net
-Summary: GDB ____executor_globals fails when EG/CG symbol may not visible in some modul +Summary: GDB ____executor_globals fails when EG/CG symbol may not visible in some module
 [2012-05-08 09:08 UTC] laruence@php.net 
it's not a bug, more about wrong usage (discussed with the report via the pull 
request)
 [2012-05-08 09:08 UTC] laruence@php.net
-Status: Open +Status: Not a bug
 
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