[Bug libc/17327] New: __run_exit_handlers may miss new handlers

[Bug libc/17327] New: __run_exit_handlers may miss new handlers

[philip.pronin at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17327

            Bug ID: 17327
           Summary: __run_exit_handlers may miss new handlers
           Product: glibc
           Version: 2.17
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: philip.pronin at gmail dot com
                CC: drepper.fsp at gmail dot com

__run_exit_handlers keeps pointer to the list node it is traversing; some exit
handler may register new handlers, but these handlers may never be executed if
__new_exitfn had to calloc new list node.  __run_exit_handlers should start the
loop over (re-read head of the list) after the each processed handler.

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[Bug libc/17327] __run_exit_handlers may miss new handlers

[sebastien.grivet at murex dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17327

sebastien.grivet at murex dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sebastien.grivet at murex dot com

--- Comment #1 from sebastien.grivet at murex dot com ---
Created attachment 8189
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8189&action=edit
C++ testcase: several destructor miss

Hello,
I have encountered this bug by using log4cxx.
I wrote this test case to try to reproduce it.

This is a run:
A()
in ~A()
B(40)
... all constructors from 40 to 1
B(1)
out ~A()
~B(28)
... only destructors from 28 to 1
~B(1)


All destructors from 40 to 29 are missing.

Regards,
Sebastien.

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[Bug libc/17327] __run_exit_handlers may miss new handlers

[sebastien.grivet at murex dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17327

--- Comment #2 from sebastien.grivet at murex dot com ---
Created attachment 8190
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8190&action=edit
Proposed patch

This a proposed patch for stdlib/exit.c

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