title: Need more information about Aborted (core dumped)
body: <p>This bellow code will generate Aborted (core dumped) at last line.</p>
  
  <p>code:</p>
  
  <pre><code>  #include &lt;stdio.h&gt;
    #include &lt;malloc.h&gt;
  
    int main()
    {
      char *ptr;
      ptr=malloc(sizeof(char)*10);
      free(ptr);
      free(ptr);     // core dumped
    }
  </code></pre>
  
  <p>output is:</p>
  
  <pre><code>*** glibc detected *** ./a.out: double free or corruption (fasttop): 0x091f7008 ***
  ======= Backtrace: =========
  /lib/i386-linux-gnu/libc.so.6(+0x75ee2)[0xb7665ee2]
  ./a.out[0x804846d]
  /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb76094d3]
  ./a.out[0x8048371]
  ======= Memory map: ========
  08048000-08049000 r-xp 00000000 fc:00 4070236    /home/gangadhar/a.out
  08049000-0804a000 r--p 00000000 fc:00 4070236    /home/gangadhar/a.out
  0804a000-0804b000 rw-p 00001000 fc:00 4070236    /home/gangadhar/a.out
  091f7000-09218000 rw-p 00000000 00:00 0          [heap]
  b75ba000-b75d6000 r-xp 00000000 fc:00 22938319   /lib/i386-linux-gnu/libgcc_s.so.1
  b75d6000-b75d7000 r--p 0001b000 fc:00 22938319   /lib/i386-linux-gnu/libgcc_s.so.1
  b75d7000-b75d8000 rw-p 0001c000 fc:00 22938319   /lib/i386-linux-gnu/libgcc_s.so.1
  b75ef000-b75f0000 rw-p 00000000 00:00 0 
  b75f0000-b7794000 r-xp 00000000 fc:00 22937623   /lib/i386-linux-gnu/libc-2.15.so
  b7794000-b7795000 ---p 001a4000 fc:00 22937623   /lib/i386-linux-gnu/libc-2.15.so
  b7795000-b7797000 r--p 001a4000 fc:00 22937623   /lib/i386-linux-gnu/libc-2.15.so
  b7797000-b7798000 rw-p 001a6000 fc:00 22937623   /lib/i386-linux-gnu/libc-2.15.so
  b7798000-b779b000 rw-p 00000000 00:00 0 
  b77b1000-b77b4000 rw-p 00000000 00:00 0 
  b77b4000-b77b5000 r-xp 00000000 00:00 0          [vdso]
  b77b5000-b77d5000 r-xp 00000000 fc:00 22937715   /lib/i386-linux-gnu/ld-2.15.so
  b77d5000-b77d6000 r--p 0001f000 fc:00 22937715   /lib/i386-linux-gnu/ld-2.15.so
  b77d6000-b77d7000 rw-p 00020000 fc:00 22937715   /lib/i386-linux-gnu/ld-2.15.so
  bf7e0000-bf801000 rw-p 00000000 00:00 0          [stack]
  Aborted (core dumped)
  </code></pre>
  
  <p>Here I'm interested to know in which cases these core dumped will occur? </p>
  
  <p>Can we find out at which line this is occurred without using debugger? </p>
  
  <p>what information it is showing(about shared libraries)?</p>