re PR libfortran/66458 (Loading libgfortran.so changes the FPU exception flags)

	PR libfortran/66458
	* runtime/main.c (init): Only call set_fpu() if requested by user.

From-SVN: r226725

libgfortran/ChangeLog

+2015-08-07  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
+
+	PR libfortran/66458
+	* runtime/main.c (init): Only call set_fpu() if requested by user.
+
 2015-08-06  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>
 
 	* runtime/compile_options.c (set_options): Fix typos.

libgfortran/runtime/main.c

@@ -263,7 +263,11 @@ init (void)
   init_variables ();
 
   init_units ();
-  set_fpu ();
+
+  /* If (and only if) the user asked for it, set up the FPU state.  */
+  if (options.fpe != 0)
+    set_fpu ();
+
   init_compile_options ();
 
 #ifdef DEBUG