test malloc/realloc/free with some flag combo's

1 files changed, 96 insertions, 0 deletions

diff --git a/regress/lib/libc/malloc/malloc_general/malloc_general.c b/regress/lib/libc/malloc/malloc_general/malloc_general.c
new file mode 100644
index 00000000000..336326bc57c
--- /dev/null
+++ b/regress/lib/libc/malloc/malloc_general/malloc_general.c
@@ -0,0 +1,96 @@
+/*	$OpenBSD	*/
+/*
+ * Copyright (c) 2017 Otto Moerbeek <otto@drijf.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* $define VERBOSE */
+
+#define N 1000
+
+size_t size(void)
+{
+	int p = arc4random_uniform(13) + 3;
+	return arc4random_uniform(1 << p);
+}
+
+void *a[N];
+
+extern char *malloc_options;
+
+int
+main(int argc, char *argv[])
+{
+	int count, p, i;
+	void * q;
+	size_t sz;
+
+	if (argc == 1)
+		errx(1, "usage: malloc_options");
+
+	malloc_options = argv[1];
+
+	for (count = 0; count < 800000; count++) {
+		if (count % 10000 == 0) {
+			printf(".");
+			fflush(stdout);
+		}
+		p = arc4random_uniform(2);
+		i = arc4random_uniform(N);
+		switch (p) {
+		case 0:
+			if (a[i]) {
+#ifdef VERBOSE
+				printf("F %p\n", a[i]);
+#endif
+				free(a[i]);
+				a[i] = NULL;
+			}
+			sz = size();
+#ifdef VERBOSE
+			printf("M %zu=", sz);
+#endif
+			a[i] = malloc(sz);
+#ifdef VERBOSE
+			printf("%p\n", a[i]);
+#endif
+			if (a[i])
+				memset(a[i], 0xff, sz);
+			break;
+		case 1:
+			sz = size();
+#ifdef VERBOSE
+			printf("R %p %zu=", a[i], sz);
+#endif
+			q = realloc(a[i], sz);
+#ifdef VERBOSE
+			printf("%p\n", q);
+#endif
+			if (q) {
+				a[i]= q;
+				if (a[i])
+					memset(a[i], 0xff, sz);
+			}
+			break;
+		}
+	}
+	for (i = 0; i < N; i++)
+		free(a[i]);
+	printf("\n");
+	return 0;
+}