[jakob@one pacman-git]$ sudo gdb pacman
GNU gdb (GDB) 7.3
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/pacman...done.
(gdb) run -Syy
Starting program: /usr/bin/pacman -Syy
[Thread debugging using libthread_db enabled]
warning: config file /etc/pacman.conf, line 68: directive 'VerifySig' in section 'core' not recognized.
warning: config file /etc/pacman.conf, line 72: directive 'VerifySig' in section 'extra' not recognized.
warning: config file /etc/pacman.conf, line 80: directive 'VerifySig' in section 'community' not recognized.
:: Synchronizing package databases...
[New Thread 0xb78e0b70 (LWP 6786)]
[Thread 0xb78e0b70 (LWP 6786) exited]
[New Thread 0xb78e0b70 (LWP 6787)]
[Thread 0xb78e0b70 (LWP 6787) exited]
 core                                                        35.7K  169.6K/s 00:00:00 [##################################################] 100%
[New Thread 0xb78e0b70 (LWP 6788)]
[Thread 0xb78e0b70 (LWP 6788) exited]
 extra                                                      475.3K  657.5K/s 00:00:01 [##################################################] 100%
[New Thread 0xb78e0b70 (LWP 6789)]
[Thread 0xb78e0b70 (LWP 6789) exited]
 community                                                  452.2K  595.2K/s 00:00:01 [##################################################] 100%

Program received signal SIGSEGV, Segmentation fault.
0xb7fa76c3 in curl_progress (file=0x807b5e0, dltotal=0, dlnow=0, ultotal=0, ulnow=0) at dload.c:90
90		if(payload->handle->dlcb == NULL) {
(gdb) bt
#0  0xb7fa76c3 in curl_progress (file=0x807b5e0, dltotal=0, dlnow=0, ultotal=0, ulnow=0) at dload.c:90
#1  0xb7dd8776 in Curl_pgrsUpdate () from /usr/lib/libcurl.so.4
#2  0xb7e12275 in Curl_pp_easy_statemach () from /usr/lib/libcurl.so.4
#3  0xb7de2088 in ?? () from /usr/lib/libcurl.so.4
#4  0xb7de21a9 in ?? () from /usr/lib/libcurl.so.4
#5  0xb7de8547 in Curl_disconnect () from /usr/lib/libcurl.so.4
#6  0xb7de871c in ?? () from /usr/lib/libcurl.so.4
#7  0xb7dea9cf in Curl_close () from /usr/lib/libcurl.so.4
#8  0xb7df9bdf in curl_easy_cleanup () from /usr/lib/libcurl.so.4
#9  0xb7fa9815 in _alpm_handle_free (handle=0x8060a00) at handle.c:74
#10 0xb7f99a0f in alpm_release (myhandle=0x8060a00) at alpm.c:121
#11 0x08050399 in cleanup (ret=0) at pacman.c:266
#12 0x0804b723 in main (argc=2, argv=0xbffffd14) at pacman.c:875
(gdb) print payload
$1 = (struct dload_payload *) 0x807b5e0
(gdb) print payload->handle
$2 = (alpm_handle_t *) 0x0
(gdb)