Random quick-and-dirty evil malloc checker.

1 files changed, 43 insertions, 0 deletions

diff --git a/test/malloc/malloc.c b/test/malloc/malloc.c
new file mode 100644
index 000000000..698ab5e70
--- /dev/null
+++ b/test/malloc/malloc.c
@@ -0,0 +1,43 @@
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define N_PTRS 1000
+#define N_ALLOCS 10000
+#define MAX_SIZE 0x10000
+
+#define random_size()	(random()%MAX_SIZE)
+#define random_ptr()	(random()%N_PTRS)
+
+int main(int argc,char *argv[])
+{
+	void **ptrs;
+	int i,j;
+	int size;
+
+	srandom(0x19730929);
+
+	ptrs = malloc(N_PTRS*sizeof(void *));
+
+	for(i=0;i<N_PTRS;i++){
+		ptrs[i]=malloc(random_size());
+	}
+	for(i=0;i<N_ALLOCS;i++){
+		j=random_ptr();
+		free(ptrs[j]);
+
+		size=random_size();
+		ptrs[j]=malloc(size);
+		if(!ptrs[j]){
+			printf("malloc failed! %d\n",i);
+		}
+		memset(ptrs[j],0,size);
+	}
+	for(i=0;i<N_PTRS;i++){
+		free(ptrs[i]);
+	}
+
+	return 0;
+}
+