Re: [BUG] Halt during fetch on MacOS

From: Junio C Hamano <gitster@pobox.com>
Date: Mar 6, 2014, 18:24 UTC
Message-ID: <xmqqk3c7yyku.fsf@gitster.dls.corp.google.com>
In-Reply-To: <CAFFUb6ViYitJC1sjL_nyWY1RHuJKURfcZ+_5Zk2kr+suh+txZg@mail.gmail.com>

Conley Owens <cco3@android.com> writes:

Show 18 quoted lines

> On Fri, Feb 28, 2014 at 3:26 PM, Conley Owens <cco3@android.com> wrote:
>> $ git --version  # This is just the git from MacPorts
>> git version 1.8.5.5
>> $ sw_vers
>> ProductName:    Mac OS X
>> ProductVersion: 10.8.5
>> BuildVersion:   12F45
>
> OK, I've tried using my own build from master, and I still get the same results.
>
> I've done a little more investigation and discovered it always hangs at:
> `atexit(notify_parent);` in `run-command.c:start_command`
> when running:
> trace: run_command: 'git-remote-https' 'aosp'
> 'https://android.googlesource.com/platform/external/tinyxml2'
>
> Could this have to do with the atexit implementation?  (eg. limit on
> the number of functions that can be registered, etc)

Thanks.

An interesting theory indeed. I read that an implementation is supposed to take at least ATEXIT_MAX (32) calls to atexit(3); while I do think we register functions with atexit(3) from multiple places in our code, I doubt we would be making that many.

> $ cc -v
> Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
> Target: x86_64-apple-darwin12.5.0
> Thread model: posix