Do not enable -fcheck-pointer-bounds w/ -fsanitize=bounds

	PR sanitizer/71458
	* toplev.c (process_options): Do not enable -fcheck-pointer-bounds
	w/ -fsanitize=bounds.
	* gcc.target/i386/pr71458.c: New test.

From-SVN: r237353

gcc/ChangeLog

+2016-06-13  Martin Liska  <mliska@suse.cz>
+
+	PR sanitizer/71458
+	* toplev.c (process_options): Do not enable -fcheck-pointer-bounds
+	w/ -fsanitize=bounds.
+
 2016-06-12  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.c (ix86_init_builtins): Calculate

gcc/testsuite/ChangeLog

+2016-06-13  Martin Liska  <mliska@suse.cz>
+
+	* gcc.target/i386/pr71458.c: New test.
+
 2016-06-12  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/71241

gcc/testsuite/gcc.target/i386/pr71458.c

+/* { dg-do compile { target { ! x32 } } } */
+/* { dg-options "-fcheck-pointer-bounds -mmpx -fsanitize=bounds" } */
+/* { dg-error "-fcheck-pointer-bounds is not supported with -fsanitize=bounds" "" { target *-*-* } 0 } */
+
+enum {} a[0];
+void fn1(int);
+void fn2() { fn1(a[-1]); }

gcc/toplev.c

@@ -1276,6 +1276,15 @@ process_options (void)
 		    "Address Sanitizer");
 	  flag_check_pointer_bounds = 0;
 	}
+
+      if (flag_sanitize & SANITIZE_BOUNDS)
+	{
+	  error_at (UNKNOWN_LOCATION,
+		    "-fcheck-pointer-bounds is not supported with "
+		    "-fsanitize=bounds");
+	  flag_check_pointer_bounds = 0;
+	}
+
     }
 
   /* One region RA really helps to decrease the code size.  */