diff -cr Python-3.5.1.orig/configure.ac Python-3.5.1/configure.ac
*** Python-3.5.1.orig/configure.ac	2016-01-19 12:28:11.000000000 -0500
--- Python-3.5.1/configure.ac	2016-01-19 12:28:57.000000000 -0500
***************
*** 1436,1465 ****
        BASECFLAGS="$BASECFLAGS -Wsign-compare"
      fi
  
-     AC_MSG_CHECKING(if we can turn on $CC unreachable code warning)
-      ac_save_cc="$CC"
-      CC="$CC -Wunreachable-code"
-      save_CFLAGS="$CFLAGS"
-      AC_CACHE_VAL(ac_cv_enable_unreachable_code_warning,
-        AC_COMPILE_IFELSE(
-          [
- 	   AC_LANG_PROGRAM([[]], [[]])
- 	 ],[
-            ac_cv_enable_unreachable_code_warning=yes
- 	 ],[
-            ac_cv_enable_unreachable_code_warning=no
- 	 ]))
-      CFLAGS="$save_CFLAGS"
-      CC="$ac_save_cc"
-     AC_MSG_RESULT($ac_cv_enable_unreachable_code_warning)
- 
-     # Don't enable unreachable code warning in debug mode, since it usually
-     # results in non-standard code paths.
-     if test $ac_cv_enable_unreachable_code_warning = yes && test "$Py_DEBUG" != "true"
-     then
-       BASECFLAGS="$BASECFLAGS -Wunreachable-code"
-     fi
- 
      # if using gcc on alpha, use -mieee to get (near) full IEEE 754
      # support.  Without this, treatment of subnormals doesn't follow
      # the standard.
--- 1436,1441 ----