test memory leak

malloc_test2.c

@@ -0,0 +1,43 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+#include <unistd.h>
+
+
+#define K (1024 * 500000)
+#define MAXNUM 1
+
+int main() {
+
+    printf("Welcome to memory leak example::%d\n", getpid());
+
+    char *ptrs[MAXNUM];
+    int i;
+    // malloc large block memory
+    for (int i = 0; i < MAXNUM; i++) {
+        ptrs[i] = (char *)malloc(1 * K);
+        memset(ptrs[i], 0, 1 * K);
+    }
+    // never free only 1B memory leak, what it will impact to the system?
+    char *tmp1 = (char *)malloc(1);
+    memset(tmp1, 0, 1);
+
+    printf("%s\n", "malloc done");
+    getchar();
+
+    printf("%s\n", "start free memory");
+
+    // for (i = 0; i < MAXNUM; i++) {
+    //     free(ptrs[i]);
+    // }
+    // reverse work?
+     for (i = MAXNUM-1; i >= 0; i--) {
+        free(ptrs[i]);
+    }
+    printf("%s\n", "free done");
+
+    getchar();
+
+    return 0;
+}