diff --git a/lib/symboldatabase.cpp b/lib/symboldatabase.cpp
index cb0fa41ca..b459ea849 100644
--- a/lib/symboldatabase.cpp
+++ b/lib/symboldatabase.cpp
@@ -2023,7 +2023,7 @@ bool Function::isImplicitlyVirtual(bool defaultVal) const
 bool Function::isImplicitlyVirtual_rec(const ::Type* baseType, bool& safe) const
 {
     // check each base class
-    for (unsigned int i = 0; i < baseType->derivedFrom.size(); ++i) {
+    for (std::size_t i = 0; i < baseType->derivedFrom.size(); ++i) {
         // check if base class exists in database
         if (baseType->derivedFrom[i].type && baseType->derivedFrom[i].type->classScope) {
             const Scope *parent = baseType->derivedFrom[i].type->classScope;
@@ -2055,9 +2055,11 @@ bool Function::isImplicitlyVirtual_rec(const ::Type* baseType, bool& safe) const
                 }
             }
 
-            if (!baseType->derivedFrom[i].type->derivedFrom.empty())
-                if (isImplicitlyVirtual_rec(baseType->derivedFrom[i].type, safe))
+            if (!baseType->derivedFrom[i].type->derivedFrom.empty()) {
+                // avoid endless recursion, see #5289 Crash: Stack overflow in isImplicitlyVirtual_rec when checking SVN
+                if ((baseType != baseType->derivedFrom[i].type) && isImplicitlyVirtual_rec(baseType->derivedFrom[i].type, safe))
                     return true;
+            }
         } else {
             // unable to find base class so assume it has no virtual function
             safe = false;
diff --git a/test/testsymboldatabase.cpp b/test/testsymboldatabase.cpp
index 3cd5cbe43..ba10d8b2e 100644
--- a/test/testsymboldatabase.cpp
+++ b/test/testsymboldatabase.cpp
@@ -1760,6 +1760,19 @@ private:
                           "};");
             ASSERT(db && db->findScopeByName("Deri") && db->findScopeByName("Deri")->functionList.front().isImplicitlyVirtual(false)); // Default false, but we saw "virtual" -> true
         }
+        // #5289
+        {
+            GET_SYMBOL_DB("template<>\n"
+                          "class Bar<void, void> {\n"
+                          "};\n"
+                          "template<typename K, typename V, int KeySize>\n"
+                          "class Bar : private Bar<void, void> {\n"
+                          "   void foo() {\n"
+                          "   }\n"
+                          "};");
+            ASSERT(db && db->findScopeByName("Bar") && !db->findScopeByName("Bar")->functionList.front().isImplicitlyVirtual(false));
+        }
+
     }
 
     void garbage() {