1 files changed, 61 insertions, 0 deletions
diff --git a/usr/src/lib/libmtmalloc/tests/dblfree.c b/usr/src/lib/libmtmalloc/tests/dblfree.c
new file mode 100644
index 0000000000..dc93b9ba97
--- /dev/null
+++ b/usr/src/lib/libmtmalloc/tests/dblfree.c
@@ -0,0 +1,61 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 1998 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma	ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <stdio.h>
+#include "mtmalloc.h"
+
+/*
+ * test double free. The first double free should be fine.
+ * the next double free should result in a core dump.
+ *
+ * cc -O -o dblfree dblfree.c -I../common -lmtmalloc
+ */
+
+main(int argc, char ** argv)
+{
+	char *foo;
+
+	foo = malloc(10);
+	free(foo);
+
+	mallocctl(MTDOUBLEFREE, 1);
+
+	printf("Double free coming up\n");
+	printf("This should NOT dump core.\n");
+	free(foo);
+
+	foo = malloc(10);
+	free(foo);
+
+	mallocctl(MTDOUBLEFREE, 0);
+
+	printf("Double free coming up\n");
+	printf("This should dump core.\n");
+
+	free(foo);
+}