fix: return payload

hw3/src/main.c

@@ -1,7 +1,28 @@
 #include <stdio.h>
 #include "sfmm.h"
 
-int main(int argc, char const *argv[]) {
+int main(int argc, char const *argv[])
+{
+    size_t sz_x = sizeof(int);
+    void *x1 = sf_malloc(sz_x);
+    void *x2 = sf_malloc(sz_x);
+    void *x3 = sf_malloc(sz_x);
+    void *x4 = sf_malloc(sz_x);
+    void *x5 = sf_malloc(sz_x);
 
+    sf_show_heap();
+
+    sf_free(x1);
+    sf_free(x2);
+    sf_free(x3);
+    sf_free(x4);
+    sf_free(x5);
+    
+
+    void *x6 = sf_malloc(sz_x);
+    sf_show_heap();
+    sf_free(x6);
+
+    sf_show_heap();
     return EXIT_SUCCESS;
 }

hw3/src/sfmm.c

@@ -63,7 +63,7 @@ void *sf_malloc(sf_size_t size)
             sf_quick_lists[index].length -= 1;
             sf_quick_lists[index].first = block->body.links.next;
             set_entire_header(block, size, get_block_size(block->header), 1, get_prv_alloc(block->header), 0, 0);
-            return block;
+            return block->body.payload;
         }
 
     index = get_index(min_size);