From 94e52d13db49405b1858090041fdf9af49096d43 Mon Sep 17 00:00:00 2001
From: practicalswift <practicalswift@users.noreply.github.com>
Date: Thu, 15 Mar 2018 16:13:11 +0100
Subject: [PATCH] Add -ftrapv to DEBUG_CXXFLAGS when --enable-debug is used

---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index ff7f1b39c8..e4142f5762 100644
--- a/configure.ac
+++ b/configure.ac
@@ -263,6 +263,7 @@ if test "x$enable_debug" = xyes; then
 
   AX_CHECK_PREPROC_FLAG([-DDEBUG],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG"]],,[[$CXXFLAG_WERROR]])
   AX_CHECK_PREPROC_FLAG([-DDEBUG_LOCKORDER],[[DEBUG_CPPFLAGS="$DEBUG_CPPFLAGS -DDEBUG_LOCKORDER"]],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-ftrapv],[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -ftrapv"],,[[$CXXFLAG_WERROR]])
 fi
 
 if test x$use_sanitizers != x; then