[gnutls-devel] GnuTLS | ecore_event_handler_add(): member access within null pointer of type 'struct Ecore_Event_Handler' (#884)

[Development of GNU's TLS library]

Tim Rühsen created an issue: https://gitlab.com/gnutls/gnutls/issues/884



Any idea about this ?

```
$ cat tests/suite/eagain.log 
Warning: no private key and certificate pairs were set.
Echo Server listening on IPv4 0.0.0.0 port 44517...done
Echo Server listening on IPv6 :: port 44517...done
ecore/src/lib/ecore_events.c:137:7: runtime error: member access within null pointer of type 'struct Ecore_Event_Handler'
    #0 0x562619617a0e in ecore_event_handler_add ecore/src/lib/ecore_events.c:137
    #1 0x562619621c0e in _ecore_job_init ecore/src/lib/ecore_job.c:27
    #2 0x5626196171e3 in ecore_init ecore/src/lib/ecore.c:122
    #3 0x56261961626a in main /home/tim/src/gnutls/tests/suite/mini-eagain2.c:171
    #4 0x7f2c4e19cbba in __libc_start_main ../csu/libc-start.c:308
    #5 0x562619615a59 in _start (/home/tim/src/gnutls/tests/suite/eagain-cli+0x9aa59)

FAIL eagain.sh (exit status: 1)
```

Fixing the above leads to the next issue:
```
$ cat tests/suite/eagain.log          
Warning: no private key and certificate pairs were set.
Echo Server listening on IPv4 0.0.0.0 port 61742...done
Echo Server listening on IPv6 :: port 61742...done
ecore/src/lib/ecore_main.c:618:6: runtime error: member access within null pointer of type 'struct Ecore_Fd_Handler'
    #0 0x55d050285311 in ecore_main_fd_handler_add ecore/src/lib/ecore_main.c:618
    #1 0x55d0502773ce in main /home/tim/src/gnutls/tests/suite/mini-eagain2.c:203
    #2 0x7fd4395afbba in __libc_start_main ../csu/libc-start.c:308
    #3 0x55d050276a59 in _start (/home/tim/src/gnutls/tests/suite/eagain-cli+0x9aa59)

Error in handshake: The TLS connection was non-properly terminated.
FAIL eagain.sh (exit status: 1)
```

After fixing this `tests/suite/eagain-cli` hangs at
```
0x00007f308bf68177 in __GI___select (nfds=1, readfds=0x7ffc8d7c3440, writefds=0x7ffc8d7c34e0, 
    exceptfds=0x7ffc8d7c3580, timeout=0x0) at ../sysdeps/unix/sysv/linux/select.c:41
41      ../sysdeps/unix/sysv/linux/select.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt
#0  0x00007f308bf68177 in __GI___select (nfds=1, readfds=0x7ffc8d7c3440, writefds=0x7ffc8d7c34e0, 
    exceptfds=0x7ffc8d7c3580, timeout=0x0) at ../sysdeps/unix/sysv/linux/select.c:41
#1  0x000055c15f965447 in _ecore_main_select (timeout=<optimized out>, timeout at entry=-1)
    at ecore/src/lib/ecore_main.c:903
#2  0x000055c15f966b4e in _ecore_main_loop_iterate_internal (once_only=once_only at entry=0)
    at ecore/src/lib/ecore_main.c:1186
#3  0x000055c15f967037 in ecore_main_loop_begin () at ecore/src/lib/ecore_main.c:494
#4  0x000055c15f9593dd in main () at mini-eagain2.c:210
```

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