[sr-dev] [kamailio/kamailio] http_async_client: coredump on 5.0.5 (#1391)

[Victor Seva]

No luck at all, I'm having cores even with 
```
# apt-cache policy libcurl3
libcurl3:
  Installed: 7.57.0-1trusty1
```

```
# gdb kamailio CoreDump
GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.3) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from kamailio...Reading symbols from /usr/lib/debug/.build-id/6d/4bb62f73fd6cf4572deb923b7ace1f75c419be.debug...done.
done.
[New LWP 37737]
[New LWP 37738]
[New LWP 37739]
[New LWP 37736]
[New LWP 5784]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/kamailio -f /etc/kamailio/kamailio.cfg -P /var/run/kamailio/kamailio.'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007ff92aa76b6a in malloc_printerr (ptr=0x7ff9100008c0, str=0x7ff92ab79441 "corrupted double-linked list", action=<optimised out>) at malloc.c:4998
4998	malloc.c: No such file or directory.
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
    from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named 'libstdcxx'
(gdb) bt
#0  0x00007ff92aa76b6a in malloc_printerr (ptr=0x7ff9100008c0, str=0x7ff92ab79441 "corrupted double-linked list", action=<optimised out>) at malloc.c:4998
#1  malloc_consolidate (av=0x7ff91571a678) at malloc.c:4159
#2  0x00007ff91571a650 in ?? ()
#3  0x00007ff91571ad10 in ?? ()
#4  0x00007ff91a34bbd0 in _nss_files_gethostbyname3_r (name=0x400000002 <error: Cannot access memory at address 0x400000002>, af=715561765, result=0x7ff91571a66a, buffer=0x7ff91571ac00 "\001", buflen=140707803718936, errnop=0x7ff9100008c0, herrnop=0x400000002, 
    ttlp=0x7ff91571a650, canonp=0x7ff91571ad10) at nss_files/files-hosts.c:149
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb) 
```

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