qwurx [shmem] ~/HTML-Tidy-1.08 > gdb perl                                      
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This GDB was configured as "i386-redhat-linux-gnu"...
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Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run -T -I blib/lib -I blib/arch t/perfect.t
Starting program: /usr/bin/perl -I blib/lib -I blib/arch t/perfect.t
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[Thread debugging using libthread_db enabled]
[New Thread -1209018688 (LWP 9077)]
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1..3
ok 1 - use HTML::Tidy;
ok 2 - The object isa HTML::Tidy
# running tidy->parse

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1209018688 (LWP 9077)]
0x00144473 in tidyBufFree () from /usr/lib/libtidy-0.99.so.0
(gdb) bt
#0  0x00144473 in tidyBufFree () from /usr/lib/libtidy-0.99.so.0
#1  0x001132e0 in XS_HTML__Tidy__tidy_messages (my_perl=0x9c2b008, cv=0x9d5881c) at Tidy.xs:99
#2  0x041c343d in Perl_pp_entersub () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so
#3  0x041bc89f in Perl_runops_standard () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so
#4  0x0416210e in perl_run () from /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so
#5  0x0804921e in main ()
(gdb)