add tests for double free() and use after free()

1 files changed, 19 insertions, 0 deletions

diff --git a/test/double-free.c b/test/double-free.c
new file mode 100644
index 0000000..73ceff5
--- /dev/null
+++ b/test/double-free.c
@@ -0,0 +1,19 @@
+#define _POSIX_C_SOURCE 200809L
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include "mapalloc.h"
+
+int main(void)
+{
+	const char buf[] = "THIS IS A CONSTANT STRING";
+
+	char *ptr = map_malloc(sizeof(buf));
+	memcpy(ptr, buf, sizeof(buf));
+	printf("%p: %s\n", ptr, ptr);
+
+	map_free(ptr);
+	printf("freed\n");
+	map_free(ptr);
+	printf("freed again\n");
+}