Here's your valgrind result.  Interestingly, it doesn't segfault and crash when run from valgrind - it just keeps on trucking.  Nevertheless, you can certainly see where it WAS crashing, and tons of errors occurring there.


--2012-07-08 20:07:22--  http://www.[redacted]/%E2%80%9Dhttp://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js%E2%80%9D
Reusing existing connection to www.[redacted]:80.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://www.[redacted]/%E2%80%9Dhttp:/ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js%E2%80%9D [following]
==10570== Invalid read of size 1
==10570==    at 0x4C2BFA2: strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x42BE73: remote_to_utf8 (iri.c:272)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a0 is 0 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 1
==10570==    at 0x4C2BFB4: strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x42BE73: remote_to_utf8 (iri.c:272)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a1 is 1 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 1
==10570==    at 0x42BE7D: remote_to_utf8 (iri.c:274)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a0 is 0 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 1
==10570==    at 0x42BE8C: remote_to_utf8 (iri.c:274)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a1 is 1 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 1
==10570==    at 0x4C2BFC2: __GI_strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x59197F5: strdup (strdup.c:42)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a0 is 0 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 1
==10570==    at 0x4C2BFD4: __GI_strlen (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x59197F5: strdup (strdup.c:42)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a1 is 1 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x5922392: __GI_memcpy (memcpy.S:197)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a0 is 0 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x5922395: __GI_memcpy (memcpy.S:198)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0a8 is 8 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x5922399: __GI_memcpy (memcpy.S:199)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0b0 is 16 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x592239D: __GI_memcpy (memcpy.S:200)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0b8 is 24 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x59223BC: __GI_memcpy (memcpy.S:214)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0c0 is 32 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x59223BF: __GI_memcpy (memcpy.S:215)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0c8 is 40 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x59223C3: __GI_memcpy (memcpy.S:216)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0d0 is 48 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x59223C7: __GI_memcpy (memcpy.S:217)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0d8 is 56 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 2
==10570==    at 0x59222DE: __GI_memcpy (memcpy.S:84)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0e0 is 64 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 4
==10570==    at 0x59222F5: __GI_memcpy (memcpy.S:96)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0e2 is 66 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x5922306: __GI_memcpy (memcpy.S:108)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0e6 is 70 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x5922320: __GI_memcpy (memcpy.S:123)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0ee is 78 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
==10570== Invalid read of size 8
==10570==    at 0x5922323: __GI_memcpy (memcpy.S:124)
==10570==    by 0x42BEBD: remote_to_utf8 (iri.c:276)
==10570==    by 0x427244: url_parse (url.c:700)
==10570==    by 0x4248F9: retrieve_url (retr.c:794)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x636f0f6 is 86 bytes inside a block of size 94 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
--2012-07-08 20:07:22--  http://www.[redacted]/%E2%80%9Dhttp://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js%E2%80%9D
Reusing existing connection to www.[redacted]:80.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://www.[redacted]/%E2%80%9Dhttp:/ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js%E2%80%9D [following]
--2012-07-08 20:07:22--  http://www.[redacted]/%E2%80%9Dhttp:/ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js%E2%80%9D
Reusing existing connection to www.[redacted]:80.
HTTP request sent, awaiting response... 404 Not Found
2012-07-08 20:07:23 ERROR 404: Not Found.

==10570== Invalid free() / delete / delete[] / realloc()
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x42C0BC: iri_free (iri.c:330)
==10570==    by 0x422627: retrieve_tree (recur.c:448)
==10570==    by 0x4053BA: main (main.c:1388)
==10570==  Address 0x6370dc0 is 0 bytes inside a block of size 105 free'd
==10570==    at 0x4C2A82E: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10570==    by 0x4248E2: retrieve_url (retr.c:791)
==10570==    by 0x422734: retrieve_tree (recur.c:283)
==10570==    by 0x4053BA: main (main.c:1388)
==10570== 
--2012-07-08 20:07:23--  http://www.[redacted]/shows-page/
Reusing existing connection to www.[redacted]:80.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: `index.html'