we need stdio.h for printf()

test/malloc/realloc0.c

@@ -1,13 +1,13 @@
 #include <stdlib.h>
+#include <stdio.h>
 
 int main(int argc, char **argv)
 {
-    void *ptr = NULL;
-    ptr = realloc(ptr, 0);
-    printf("realloc(NULL, 0)  --  pointer = %p\n", ptr);
-    
-    ptr = malloc(0);
-    printf("malloc(0)  --  pointer = %p\n", ptr);
-    return 0;
-}
+	void *ptr = NULL;
+	ptr = realloc(ptr, 0);
+	printf("realloc(NULL, 0)  --  pointer = %p\n", ptr);
 
+	ptr = malloc(0);
+	printf("malloc(0)  --  pointer = %p\n", ptr);
+	return 0;
+}