From bdf1b3de6704676965db47c1504b5b191a24c737 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Mon, 29 Jan 2018 19:53:24 +0100
Subject: [PATCH] doxygen: complain instead of blowing up if more \return-s are
 present.

---
 doxygen/dox2html5.py                          |  6 ++++--
 doxygen/test/compound_detailed/File.h         |  2 ++
 .../compound_detailed/namespaceWarning.html   | 19 ++++++++++++++++++-
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/doxygen/dox2html5.py b/doxygen/dox2html5.py
index a8b29718..93176e85 100755
--- a/doxygen/dox2html5.py
+++ b/doxygen/dox2html5.py
@@ -476,8 +476,10 @@ def parse_desc_internal(state: State, element: ET.Element, immediate_parent: ET.
 
             # Return value is separated from the text flow
             if i.attrib['kind'] == 'return':
-                assert not out.return_value
-                out.return_value = parse_desc(state, i)
+                if out.return_value:
+                    logging.warning("{}: superfluous @return section found, ignoring: {} ".format(state.current, parse_desc(state, i)))
+                else:
+                    out.return_value = parse_desc(state, i)
             # Ignore the RCS strings for now
             elif i.attrib['kind'] == 'rcs':
                 logging.warning("{}: ignoring {} kind of <simplesect>".format(state.current, i.attrib['kind']))
diff --git a/doxygen/test/compound_detailed/File.h b/doxygen/test/compound_detailed/File.h
index 71cd3f1b..a3bea6da 100644
--- a/doxygen/test/compound_detailed/File.h
+++ b/doxygen/test/compound_detailed/File.h
@@ -177,6 +177,8 @@ enum Enum {
 /**
 @brief Wrong
 @param wrong This parameter is not here
+@return Returns nothing.
+@return Returns nothing, but second time. This is ignored.
 */
 void bar();
 
diff --git a/doxygen/test/compound_detailed/namespaceWarning.html b/doxygen/test/compound_detailed/namespaceWarning.html
index ab9d2ecd..86b18d5f 100644
--- a/doxygen/test/compound_detailed/namespaceWarning.html
+++ b/doxygen/test/compound_detailed/namespaceWarning.html
@@ -45,11 +45,28 @@
           <h2><a href="#func-members">Functions</a></h3>
           <dl class="m-dox">
             <dt>
-              <span class="m-dox-wrap-bumper">void <a href="#a084dfc535219dee446df1c710e215839" class="m-dox-self" name="a084dfc535219dee446df1c710e215839">bar</a>(</span><span class="m-dox-wrap">)</span>
+              <span class="m-dox-wrap-bumper">void <a href="#a084dfc535219dee446df1c710e215839" class="m-dox">bar</a>(</span><span class="m-dox-wrap">)</span>
             </dt>
             <dd>Wrong.</dd>
           </dl>
         </section>
+        <section>
+          <h2>Function documentation</h2>
+          <section class="m-dox-details" id="a084dfc535219dee446df1c710e215839"><div>
+            <h3>
+              <span class="m-dox-wrap-bumper">void Warning::<wbr /></span><span class="m-dox-wrap"><span class="m-dox-wrap-bumper"><a href="#a084dfc535219dee446df1c710e215839" class="m-dox-self">bar</a>(</span><span class="m-dox-wrap">)</span></span>
+            </h3>
+            <p>Wrong.</p>
+            <table class="m-table m-fullwidth m-flat">
+              <tfoot>
+                <tr>
+                  <th style="width: 1%">Returns</th>
+                  <td>Returns nothing.</td>
+                </tr>
+              </tfoot>
+            </table>
+          </div></section>
+        </section>
       </div>
     </div>
   </div>
-- 
2.30.2