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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - crash when shutting down without any modules loaded"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=66774">66774</a>
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>lennart@poettering.net
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>pulseaudio-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>crash when shutting down without any modules loaded
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>pulseaudio-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>pierre-bugzilla@ossman.eu
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>core
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>PulseAudio
          </td>
        </tr></table>
      <p>
        <div>
        <pre>If all the modules given fail to load, the daemon will try to shut down and
crash when trying to clean up:

E: [pulseaudio] main.c: Module load failed.
E: [pulseaudio] main.c: Failed to initialize daemon.
E: [pulseaudio] xmalloc.c: Assertion 'size > 0' failed at pulse/xmalloc.c:62,
function pa_xmalloc(). Aborting.

Easily fixed with this patch:

Index: src/pulsecore/module.c
===================================================================
--- src/pulsecore/module.c    (revision 27650)
+++ src/pulsecore/module.c    (working copy)
@@ -217,6 +217,9 @@
     pa_assert(c);
     pa_assert(c->modules);

+    if (pa_idxset_isempty(c->modules))
+        return;
+
     /* Unload modules in reverse order by default */
     indices = pa_xnew(uint32_t, pa_idxset_size(c->modules));
     i = 0;</pre>
        </div>
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