lang.c (java_init_options_struct): Disable optimizations which assume a NULL…

lang.c (java_init_options_struct): Disable optimizations which assume a NULL pointer dereference will cause a fault.

	* lang.c (java_init_options_struct): Disable optimizations
	which assume a NULL pointer dereference will cause a fault.

From-SVN: r181674

gcc/java/ChangeLog

+2011-11-23  Jeffrey A Law  (law@cygnus.com)
+
+	* lang.c (java_init_options_struct): Disable optimizations
+	which assume a NULL pointer dereference will cause a fault.
+
 2011-11-07  Richard Henderson  <rth@redhat.com>
 
 	* builtins.c (compareAndSwapInt_builtin): Use can_compare_and_swap_p.

gcc/java/lang.c

@@ -556,6 +556,10 @@ java_init_options_struct (struct gcc_options *opts)
 
   /* Java requires left-to-right evaluation of subexpressions.  */
   opts->x_flag_evaluation_order = 1;
+
+  /* Java catches NULL pointer exceptions, thus we can not necessarily
+     rely on a pointer having a non-NULL value after a dereference.  */
+  opts->x_flag_delete_null_pointer_checks = 0;
 }
 
 static void