From c8785a285456f8121e0d5d25a002739edeb2dc01 Mon Sep 17 00:00:00 2001
From: Alexandre Duret-Lutz <adl@lrde.epita.fr>
Date: Fri, 2 Oct 2015 11:59:58 +0200
Subject: [PATCH] * m4/gccwarn.m4: Add -Woverloaded-virtual.

---
 m4/gccwarn.m4 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/m4/gccwarn.m4 b/m4/gccwarn.m4
index 1a5d44372..6c83bc35d 100644
--- a/m4/gccwarn.m4
+++ b/m4/gccwarn.m4
@@ -34,7 +34,8 @@ EOF
    Wcast-qual \
    Wdocumentation \
    Wmissing-declarations \
-   Wnoexcept
+   Wnoexcept \
+   Woverloaded-virtual
   do
     CXXFLAGS="$cf_save_CXXFLAGS $ac_cv_prog_gxx_warn_flags -$cf_opt"
     if AC_TRY_EVAL(ac_compile); then