From e63311276e13bbd8ac304ba914bf14022fc1af40 Mon Sep 17 00:00:00 2001
From: albert-github <albert.tests@gmail.com>
Date: Thu, 29 Oct 2020 13:04:29 +0100
Subject: issue #8139 Segfault after a8bf5d3

As indicated in the issue the proposed fix fixes OP's problem (according to his initial tests) as well as the problem in the CGAL documentation.
---
 src/doxygen.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/doxygen.cpp b/src/doxygen.cpp
index b459a4b..05937fe 100644
--- a/src/doxygen.cpp
+++ b/src/doxygen.cpp
@@ -2446,7 +2446,7 @@ static bool isVarWithConstructor(const Entry *root)
     result=FALSE;
     goto done;
   }
-  else if (fd->name().right(2)==".c" || fd->name().right(2)==".h")
+  else if ((fd != nullptr) && (fd->name().right(2)==".c" || fd->name().right(2)==".h"))
   { // inside a .c file
     result=FALSE;
     goto done;
-- 
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