1 files changed, 21 insertions, 0 deletions
diff --git a/poppler-glib/src/index_iter.hg b/poppler-glib/src/index_iter.hg
index c513d5b..086c805 100644
--- a/poppler-glib/src/index_iter.hg
+++ b/poppler-glib/src/index_iter.hg
@@ -74,6 +74,27 @@ class IndexIter
      * @endcode
      */
     inline operator BoolExpr() const { return gobj() ? GINT_TO_POINTER(1) : 0; }
+
+  private:
+    /** Relational operators are deleted to prevent invalid conversion
+     * to const void*.
+     */
+    bool operator<(const IndexIter& src) const;
+
+    /// See operator<().
+    bool operator<=(const IndexIter& src) const;
+
+    /// See operator<().
+    bool operator>(const IndexIter& src) const;
+
+    /// See operator<().
+    bool operator>=(const IndexIter& src) const;
+
+    /// See operator<().
+    bool operator==(const IndexIter& src) const;
+
+    /// See operator<().
+    bool operator!=(const IndexIter& src) const;
 };
 
 } // namespace Poppler