Add test case for `scm_take_u8vector ()'.

This is a followup to commit d7e7a02a62
("Fix leaky behavior of `scm_take_TAGvector ()'.") and a reminder that
the uniform vector implementation can't do away with the cell->buffer
indirection.

* test-suite/standalone/Makefile.am (test_scm_take_u8vector_SOURCES,
  test_scm_take_u8vector_CFLAGS, test_scm_take_u8vector_LDADD): New.
  (check_PROGRAMS, TESTS): Add `test-scm-take-u8vector'.

* test-suite/standalone/test-scm-take-u8vector.c: New file.

test-suite/standalone/.gitignore

@@ -10,3 +10,4 @@
 /test-scm-c-read
 /test-fast-slot-ref
 /test-scm-take-locale-symbol
+/test-scm-take-u8vector

test-suite/standalone/Makefile.am

@@ -129,6 +129,13 @@ test_scm_take_locale_symbol_LDADD = ${top_builddir}/libguile/libguile.la
 check_PROGRAMS += test-scm-take-locale-symbol
 TESTS += test-scm-take-locale-symbol
 
+# test-scm-take-u8vector
+test_scm_take_u8vector_SOURCES = test-scm-take-u8vector.c
+test_scm_take_u8vector_CFLAGS = ${test_cflags}
+test_scm_take_u8vector_LDADD = ${top_builddir}/libguile/libguile.la
+check_PROGRAMS += test-scm-take-u8vector
+TESTS += test-scm-take-u8vector
+
 # test-extensions
 noinst_LTLIBRARIES += libtest-extensions.la
 libtest_extensions_la_SOURCES = test-extensions-lib.c

test-suite/standalone/test-scm-take-u8vector.c

@@ -0,0 +1,65 @@
+/* Copyright (C) 2009 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
+ */
+
+/* Make sure `scm_take_u8vector ()' returns a u8vector that actually uses the
+   provided storage.  */
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <libguile.h>
+
+#include <stdlib.h>
+
+
+static void *
+do_test (void *result)
+{
+#define LEN 123
+  SCM u8v;
+  scm_t_uint8 *data;
+  scm_t_array_handle handle;
+
+  data = scm_malloc (LEN);
+  u8v = scm_take_u8vector (data, LEN);
+
+  scm_array_get_handle (u8v, &handle);
+
+  if (scm_array_handle_u8_writable_elements (&handle) == data
+      && scm_array_handle_u8_elements (&handle) == data)
+    * (int *) result = EXIT_SUCCESS;
+  else
+    * (int *) result = EXIT_FAILURE;
+
+  scm_array_handle_release (&handle);
+
+  return NULL;
+#undef LEN
+}
+
+int
+main (int argc, char *argv[])
+{
+  int result;
+
+  scm_with_guile (do_test, &result);
+
+  return result;
+}