Breakpoint 5, PQfinish (conn=0x0) at fe-connect.c:2030
2030    {

# Shutdown postmaster in here.

(gdb) c
Continuing.

Breakpoint 6, pqsecure_write (conn=0x804e208, ptr=0x804e208,
len=134537736) at fe-secure.c:406
406             pqsigfunc       oldsighandler = pqsignal(SIGPIPE,
SIG_IGN);
(gdb) n
393     {
(gdb) 
406             pqsigfunc       oldsighandler = pqsignal(SIGPIPE,
SIG_IGN);
(gdb) 

Breakpoint 4, pqsignal (signo=5, func=0x804e208) at pqsignal.c:35
35              act.sa_handler = func;
(gdb) 
28      {
(gdb) 
35              act.sa_handler = func;
(gdb) 
36              sigemptyset(&act.sa_mask);
(gdb) 
28      {
(gdb) 
36              sigemptyset(&act.sa_mask);
(gdb) 
28      {
(gdb) 
36              sigemptyset(&act.sa_mask);
(gdb) 
38              if (signo != SIGALRM)
(gdb) 
42                      act.sa_flags |= SA_NOCLDSTOP;
(gdb) 
44              if (sigaction(signo, &act, &oact) < 0)
(gdb) 
50              return oact.sa_handler;
(gdb) 
52      }
(gdb) 
pqsecure_write (conn=0x0, ptr=0x0, len=0) at fe-secure.c:480
480                     n = send(conn->sock, ptr, len, 0);
(gdb) 

Program received signal SIGPIPE, Broken pipe.
0xffffe410 in ?? ()
(gdb)