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authorWill Newton <will.newton@linaro.org>2013-08-16 17:06:10 +0100
committerWill Newton <will.newton@linaro.org>2013-10-04 09:12:59 +0100
commit215c7d43444a64fcb571381ebcd39c7514c7b4ff (patch)
treec02b32894c7b726eb399a154e484f0751dcca3b0 /malloc
parent4cb81307b3771672864fa3a7498bd39c13267a00 (diff)
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malloc: Add memalign test.
ChangeLog: 2013-10-04 Will Newton <will.newton@linaro.org> * malloc/Makefile: Add tst-memalign. * malloc/tst-memalign.c: New file.
Diffstat (limited to 'malloc')
-rw-r--r--malloc/Makefile2
-rw-r--r--malloc/tst-memalign.c99
2 files changed, 100 insertions, 1 deletions
diff --git a/malloc/Makefile b/malloc/Makefile
index 17d146b6bb..d482879046 100644
--- a/malloc/Makefile
+++ b/malloc/Makefile
@@ -27,7 +27,7 @@ headers := $(dist-headers) obstack.h mcheck.h
tests := mallocbug tst-malloc tst-valloc tst-calloc tst-obstack \
tst-mallocstate tst-mcheck tst-mallocfork tst-trim1 \
tst-malloc-usable tst-realloc tst-posix_memalign \
- tst-pvalloc
+ tst-pvalloc tst-memalign
test-srcs = tst-mtrace
routines = malloc morecore mcheck mtrace obstack
diff --git a/malloc/tst-memalign.c b/malloc/tst-memalign.c
new file mode 100644
index 0000000000..1c59752483
--- /dev/null
+++ b/malloc/tst-memalign.c
@@ -0,0 +1,99 @@
+/* Test for memalign.
+ Copyright (C) 2013 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+ The GNU C 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 the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <malloc.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+static int errors = 0;
+
+static void
+merror (const char *msg)
+{
+ ++errors;
+ printf ("Error: %s\n", msg);
+}
+
+static int
+do_test (void)
+{
+ void *p;
+ unsigned long pagesize = getpagesize ();
+ unsigned long ptrval;
+ int save;
+
+ errno = 0;
+
+ /* An attempt to allocate a huge value should return NULL and set
+ errno to ENOMEM. */
+ p = memalign (sizeof (void *), -1);
+
+ save = errno;
+
+ if (p != NULL)
+ merror ("memalign (sizeof (void *), -1) succeeded.");
+
+ if (p == NULL && save != ENOMEM)
+ merror ("memalign (sizeof (void *), -1) errno is not set correctly");
+
+ free (p);
+
+ errno = 0;
+
+ /* Test to expose integer overflow in malloc internals from BZ #15857. */
+ p = memalign (pagesize, -pagesize);
+
+ save = errno;
+
+ if (p != NULL)
+ merror ("memalign (pagesize, -pagesize) succeeded.");
+
+ if (p == NULL && save != ENOMEM)
+ merror ("memalign (pagesize, -pagesize) errno is not set correctly");
+
+ free (p);
+
+ /* A zero-sized allocation should succeed with glibc, returning a
+ non-NULL value. */
+ p = memalign (sizeof (void *), 0);
+
+ if (p == NULL)
+ merror ("memalign (sizeof (void *), 0) failed.");
+
+ free (p);
+
+ /* Check the alignment of the returned pointer is correct. */
+ p = memalign (0x100, 10);
+
+ if (p == NULL)
+ merror ("memalign (0x100, 10) failed.");
+
+ ptrval = (unsigned long) p;
+
+ if ((ptrval & 0xff) != 0)
+ merror ("pointer is not aligned to 0x100");
+
+ free (p);
+
+ return errors != 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"