1 files changed, 20 insertions, 1 deletions
diff --git a/configure b/configure
index 671fcfe4..d1fbe948 100755
--- a/configure
+++ b/configure
@@ -1586,7 +1586,8 @@ fi
 if ! [ $nan_boxing_given ] ; then
   printf "Checking whether to use NaN boxing ... "
 
-  if [ $SIZEOF_PTR -eq 8 ] ; then
+  # too experimental: disabled
+  if false && [ $SIZEOF_PTR -eq 8 ] ; then
     nan_boxing=y
     printf "yes\n"
   else
@@ -1601,6 +1602,24 @@ if [ -n "$nan_boxing" ] ; then
   printf "#define CONFIG_NAN_BOXING 1\n" >> config.h
 fi
 
+if [ -n "$nan_boxing" ] ; then
+  printf "Checking how to disable strict aliasing warnings ... "
+
+  cat > conftest.c <<!
+int main(void)
+{
+  return 0;
+}
+!
+
+  if conftest EXTRA_FLAGS=-Wno-strict-aliasing ; then
+    printf -- "-Wno-strict-aliasing\n"
+    diag_flags="$diag_flags -Wno-strict-aliasing"
+  else
+    printf "unknown\n"
+  fi
+fi
+
 printf "Checking for intmax_t  ... "
 cat > conftest.c <<!
 #include <inttypes.h>