From 01ad5a7ba9edb5d8c96567ed80ea1a34019c5338 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= Date: Fri, 9 Apr 2010 00:30:10 +0200 Subject: Raise an error when attempting to modify the value of `%null-pointer'. * libguile/foreign.c (sym_null_pointer_error): New variable. (null_pointer_error): New function. (scm_foreign_set_x): Raise an error if attempting to modify NULL_POINTER. (scm_foreign_to_bytevector): Use `null_pointer_error ()' instead of `scm_misc_error ()'. * test-suite/tests/foreign.test: New file. * test-suite/Makefile.am (SCM_TESTS): Add tests/foreign.test. * test-suite/lib.scm (exception:null-pointer-error): New variable. --- test-suite/tests/foreign.test | 57 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 test-suite/tests/foreign.test (limited to 'test-suite/tests/foreign.test') diff --git a/test-suite/tests/foreign.test b/test-suite/tests/foreign.test new file mode 100644 index 000000000..b1add5382 --- /dev/null +++ b/test-suite/tests/foreign.test @@ -0,0 +1,57 @@ +;;;; foreign.test --- FFI. -*- mode: scheme; coding: utf-8; -*- +;;;; +;;;; Copyright (C) 2010 Free Software Foundation, Inc. +;;;; +;;;; This library is free software; you can redistribute it and/or +;;;; modify it under the terms of the GNU Lesser General Public +;;;; License as published by the Free Software Foundation; either +;;;; version 3 of the License, or (at your option) any later version. +;;;; +;;;; This library is distributed in the hope that it will be useful, +;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;;;; Lesser General Public License for more details. +;;;; +;;;; You should have received a copy of the GNU Lesser General Public +;;;; License along with this library; if not, write to the Free Software +;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +;;; +;;; See also ../standalone/test-ffi for FFI tests. +;;; + +(define-module (test-foreign) + #:use-module (system foreign) + #:use-module (rnrs bytevector) + #:use-module (test-suite lib)) + + +(with-test-prefix "null pointer" + + (pass-if "zero" + (= 0 (foreign-ref %null-pointer))) + + (pass-if-exception "foreign-set! %null-pointer" + exception:null-pointer-error + (foreign-set! %null-pointer 2)) + + (pass-if "foreign-set! other-null-pointer" + (let ((f (bytevector->foreign (make-bytevector 2)))) + (and (not (= 0 (foreign-ref f))) + (begin + (foreign-set! f 0) + (= 0 (foreign-ref f))) + (begin + ;; Here changing the pointer value of F is perfectly valid. + (foreign-set! f 777) + (= 777 (foreign-ref f)))))) + + (pass-if-exception "foreign->bytevector %null-pointer" + exception:null-pointer-error + (foreign->bytevector %null-pointer)) + + (pass-if-exception "foreign->bytevector other-null-pointer" + exception:null-pointer-error + (let ((f (bytevector->foreign (make-bytevector 2)))) + (foreign-set! f 0) + (foreign->bytevector f)))) -- cgit v1.2.1