[libdispatch-dev] [PATCH] libdispatch-r197_v1

Mark Heily mark at heily.com
Mon Jun 13 18:05:59 PDT 2011

On 06/09/2011 01:56 AM, Paolo Bonzini wrote:
> On 06/09/2011 05:27 AM, Mark Heily wrote:
>> Description: multiple fixes for libdispatch r197
>> * Workaround a link-time error by avoiding the use of
>> __private_extern__ on GNU/Linux.
> Have you reported this? Does it happen with both the LLVM internal
> assembler/linker (I'm a little rusty, I don't remember if the LLVM
> linker exists for ELF or is only for Mac OS) and GNU binutils? Can you
> send (here or privately) the output of "make >error.log 2>&1" with the
> failure?

I haven't reported the problem. It doesn't happen with the LLVM linker, 
however llvm-ld cannot generate shared libraries on Linux; it can only 
produce static libraries. I've attached the error log as you requested.

>> * Workaround a pthread_exit() bug on Linux that causes the process to
>> become a zombie.
> Can you detail this more? I remember seeing something on the list, but I
> am not sure.

When the main thread calls pthread_exit() in Linux, the process becomes a 
zombie. My memory is fuzzy, but I seem to remember having problems sending 
SIGSTOP to the process, and was also unable to attach a debugger to the 
process. Here is an LKML thread that discusses the problem and references a 
glibc bug report:


I checked kernel/exit.c in Linux 2.3.35, and it appears the kernel patch to 
fix the issue has not been applied.


  - Mark

-------------- next part --------------
A non-text attachment was scrubbed...
Name: error.log
Type: text/x-log
Size: 12790 bytes
Desc: not available
URL: <http://lists.macosforge.org/pipermail/libdispatch-dev/attachments/20110613/debc3bb6/attachment-0001.bin>

More information about the libdispatch-dev mailing list