title: why printf('c') cause Segmentation fault?
body: <p>This is my test code.</p>
  
  <pre><code>#include &lt;stdio.h&gt;
  
  int main() {
      printf('c');
      return 0;
  }
  </code></pre>
  
  <p><strong>SO:</strong> ubuntu16.04</p>
  
  <p><strong>Compiler version:</strong> gcc5.3</p>
  
  <p>Running the code above cause Segmentation fault error in "movdqu (%rdi),%xmm0 ".</p>
  
  <p>I had google it, but I want to know why cause Segmentation fault</p>