#0  0x0000000800c227c9 in _pthread_mutex_init_calloc_cb () from /lib/libc.so.7
#1  0x0000000800c26dce in free () from /lib/libc.so.7
#2  0x00000008006daad0 in Perl_sv_clear () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#3  0x00000008006dac96 in Perl_sv_free2 () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#4  0x00000008006c3e76 in Perl_hv_free_ent () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#5  0x00000008006c448e in S_hfreeentries () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#6  0x00000008006c6b3b in Perl_hv_undef () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#7  0x00000008006da97c in Perl_sv_clear () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#8  0x00000008006dac96 in Perl_sv_free2 () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#9  0x00000008006d2c40 in S_visit () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#10 0x00000008006d2ca1 in Perl_sv_clean_objs () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#11 0x000000080067bd71 in perl_destruct () from /usr/local/lib/perl5/5.10.1/mach/CORE/libperl.so
#12 0x0000000000400bcc in main ()