title: Debugging a user's crash from assembly
body: <p>I've got a software application which some users report reliably crashes in certain situations.  I can't reproduce it on any of the machines I've got so I'm feeling pretty stuck as to how to solve it.</p>
  
  <p>A user posted me the assembly line where the crash happens, like this:</p>
  
  <pre><code>00505e58 1000 adc [eax],al
  00505e5a cc int 3
  00505e5b cc int 3
  00505e5c cc int 3
  00505e5d cc int 3
  00505e5e cc int 3
  00505e5f cc int 3
  00505e60 55 push ebp
  00505e61 8bec mov ebp,esp
  00505e63 83ec1c sub esp,0x1c
  FAULT -&gt; 00505e66 ff4f08 dec dword ptr [edi+0x8] ds:0023:00000008=????????
  00505e69 53 push ebx
  00505e6a 56 push esi
  00505e6b 0f85b0000000 jne Construct2+0x105f21 (00505f21)
  00505e71 8d9894010000 lea ebx,[eax+0x194]
  00505e77 8d45f0 lea eax,[ebp-0x10]
  00505e7a 8bcb mov ecx,ebx
  00505e7c e8ef4ff1ff call Construct2+0x1ae70 (0041ae70)
  00505e81 8d45e4 lea eax,[ebp-0x1c]
  00505e84 8bcb mov ecx,ebx
  00505e86 e88580fdff call Construct2+0xddf10 (004ddf10)
  </code></pre>
  
  <p>I'm using Visual Studio 2010 and have my .pdbs for the build I gave the user.  Is it possible to turn this assembly trace in to the faulting code line?</p>