[Bug libc/23679] New: Segmentation fault in gethostid.c

[mingli.yu at windriver dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=23679

            Bug ID: 23679
           Summary: Segmentation fault in gethostid.c
           Product: glibc
           Version: 2.28
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: mingli.yu at windriver dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

1, 
# cat /mybuild/hostid.c
#include <stdio.h>
#include <unistd.h>

int
main(int argc, char *argv[])                                                    
{
    long hostid;
    hostid = gethostid();
    printf("the hostid is %ld\n", hostid);

}

2, # gcc -o /mybuild/hostid /mybuild/hostid.c

3, # /mybuild/hostid
Segmentation fault

4, gdb /mybuild/hostid
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Reading symbols from /root/hostid...done.
(gdb) r
Starting program: /root/hostid 

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7f0330e in gethostid () at
../sysdeps/unix/sysv/linux/gethostid.c:125
125       memcpy (&in, hp->h_addr,
(gdb) bt
#0  0x00007ffff7f0330e in gethostid () at
../sysdeps/unix/sysv/linux/gethostid.c:125
#1  0x0000555555555159 in main ()

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