Subject: Re: git svn fetch segfault on exit

From: Thomas Rast <[email-masked]>
Date: Thu, 18 Jul 2013 14:18:16 +0200

Jonathan Lambrechts <[email-masked]> writes:

> Every git svn call that involves a fetch produces a segmentation fault
> on exit (but the operation succeeds).
>
> *** Error in `/usr/bin/perl': double free or corruption (!prev):
> 0x0000000002ce1ac0 ***
> ======= Backtrace: =========
> /usr/lib/libc.so.6(+0x788ae)[0x7fd4d83798ae]
> /usr/lib/libc.so.6(+0x79587)[0x7fd4d837a587]
> /usr/lib/libapr-1.so.0(apr_allocator_destroy+0x1d)[0x7fd4d568e9ad]
> /usr/lib/libapr-1.so.0(apr_pool_terminate+0x30)[0x7fd4d568f590]
> /usr/lib/perl5/vendor_perl/auto/SVN/_Core/_Core.so(_wrap_apr_terminate+0x50)[0x7fd4d6886920]
> /usr/lib/perl5/core_perl/CORE/libperl.so(Perl_pp_entersub+0x571)[0x7fd4d876f821]
> /usr/lib/perl5/core_perl/CORE/libperl.so(Perl_runops_standard+0x16)[0x7fd4d8767e26]
> /usr/lib/perl5/core_perl/CORE/libperl.so(Perl_call_sv+0x3b0)[0x7fd4d86f93b0]
> /usr/lib/perl5/core_perl/CORE/libperl.so(Perl_call_list+0x2c7)[0x7fd4d86fb477]
> /usr/lib/perl5/core_perl/CORE/libperl.so(perl_destruct+0x1321)[0x7fd4d86fca91]
> /usr/bin/perl(main+0x111)[0x400e01]
> /usr/lib/libc.so.6(__libc_start_main+0xf5)[0x7fd4d8322a15]
> /usr/bin/perl[0x400e71]

Can you check if your version of the perl subversion bindings were
compiled against the perl and subversion versions that you have
installed?

Perl -- as an interpreted language -- is mostly supposed to be safe from
such segfaults, and since git-svn is pure perl, the likely culprit is in
the bindings or the svn libraries.  And the easiest way to get that to
break is a version mismatch.

-- 
Thomas Rast
trast@{inf,student}.ethz.ch