Comment 14 for bug 515525

*** glibc detected *** /usr/bin/aptitude: double free or corruption (!prev): 0x0852c6d0 ***

(gdb) bt
#0 0x00110832 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1 0x0064b601 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2 0x0064ea62 in *__GI_abort () at abort.c:92
#3 0x0068256d in __libc_message (do_abort=2, fmt=0x7518b8 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#4 0x0068c611 in malloc_printerr (action=<value optimized out>, str=0x6 <Address 0x6 out of bounds>, ptr=0x852c6d0) at malloc.c:6264
#5 0x0068de68 in _int_free (av=<value optimized out>, p=<value optimized out>) at malloc.c:4792
#6 0x00690f2d in *__GI___libc_free (mem=0x852c6d0) at malloc.c:3738
#7 0x005a3731 in operator delete(void*) () from /usr/lib/libstdc++.so.6
#8 0x005a378d in operator delete[](void*) () from /usr/lib/libstdc++.so.6
#9 0x081693bf in ~AcqTextStatus (this=0x852c690, __in_chrg=<value optimized out>) at acqprogress.cc:42
#10 0x081872dd in sigc::internal::signal_emit1<void, download_signal_log&, sigc::nil>::emit (this=0x852c5f0)
    at /usr/include/sigc++-2.0/sigc++/signal.h:1010
#11 sigc::signal1<void, download_signal_log&, sigc::nil>::emit (this=0x852c5f0) at /usr/include/sigc++-2.0/sigc++/signal.h:2777
#12 sigc::signal1<void, download_signal_log&, sigc::nil>::operator() (this=0x852c5f0) at /usr/include/sigc++-2.0/sigc++/signal.h:2785
#13 download_signal_log::Complete (this=0x852c5f0) at download_signal_log.cc:133
#14 0x0818490e in download_update_manager::finish (this=0xbffff524, res=pkgAcquire::Continue, progress=...) at download_update_manager.cc:275
#15 0x081492a0 in cmdline_do_download (m=0xbffff524, verbose=0) at cmdline_util.cc:404
#16 0x08144ea1 in cmdline_update (argc=1, argv=0xbffff898, verbose=0) at cmdline_update.cc:54
#17 0x0805efce in main (argc=2, argv=0xbffff894) at main.cc:596

Complete output is attached.
It looks like something is wrong with command line progress meter (acqprogress) when its destructor is called.