title: How to debug standard c library functions like printf?
body: <p>I wanted to debug printf function, so when I step inside the printf function (gdb debugger) it showed me this:</p>
  
  <pre><code>__printf (format=0x80484d0 " my name is Adam") at printf.c:28
  28  printf.c: No such file or directory.
  </code></pre>
  
  <p>What is the meaning of this?</p>
  
  <p>And when I again started step then there are a lot more statements like this.</p>
  
  <p>Please help me to understand this.</p>