From cc85954bdcd0ac1a8ca15a71955ced1a5fe691ce Mon Sep 17 00:00:00 2001
From: Thomas White <taw@bitwiz.org.uk>
Date: Sun, 20 Sep 2009 21:37:02 +0100
Subject: Better workaround for GCC bug

The problem triggered by CLAMP (see 692fd8a500e0f9eadc703b29b0c7550f57863e29) appears
to be GCC bug #39501.  A saner workaround than the previous one is to alter the compiler
options.
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index be06adf5e5..501295b29f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -98,6 +98,9 @@ dnl Add flags for gcc and g++
 if test "x$GCC" = xyes; then
     CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -std=c99 -ffast-math"
 
+    # Work around GCC bug #39501
+    CFLAGS="$CFLAGS -fno-finite-math-only"
+
     # Enable -fvisibility=hidden if using a gcc that supports it
     save_CFLAGS="$CFLAGS"
     AC_MSG_CHECKING([whether $CC supports -fvisibility=hidden])
@@ -111,6 +114,9 @@ fi
 if test "x$GXX" = xyes; then
     CXXFLAGS="$CXXFLAGS -Wall"
 
+    # Work around GCC bug #39501
+    CXXFLAGS="$CXXFLAGS -fno-finite-math-only"
+
     # Work around aliasing bugs - developers should comment this out
     CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
 fi
-- 
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