diff tree7/Makefile tree8/Makefile
1a2
> #  (added memory module, -DTESTING for tree.c)
6c7
< CFLAGS = -Wall -pedantic -std=c11 -ggdb
---
> CFLAGS = -Wall -pedantic -std=c11 -ggdb -DTESTING
8c9
< OBJS = treetest.o tree.o
---
> OBJS = treetest.o tree.o memory.o
15c16,17
< tree.o: tree.h
---
> tree.o: tree.h memory.h
> memory.o: memory.h
Only in tree8: memory.c
Only in tree8: memory.h
diff tree7/tree.c tree8/tree.c
3c3
<  *  (version 7: add tree_delete)
---
>  *  (version 8: add malloc/free tracking)
11a12
> #include "memory.h"
13c14
< /**************** global variables ****************/
---
> /**************** file-local global variables ****************/
39a41
> 
47c49
<   tree_t *tree = malloc(sizeof(tree_t));
---
>   tree_t *tree = count_malloc(sizeof(tree_t));
64a67,70
>  
> #ifdef TESTING
>   count_report(stdout, "After tree_insert");
> #endif
99c105
<   treenode_t *node = malloc(sizeof(treenode_t));
---
>   treenode_t *node = count_malloc(sizeof(treenode_t));
105c111
<     node->key = malloc(strlen(key)+1);
---
>     node->key = count_malloc(strlen(key)+1);
109c115
<       free(node);
---
>       count_free(node);
194c200,204
<   free(tree);
---
>   count_free(tree);
> 
> #ifdef TESTING
>   count_report(stdout, "End of tree_delete");
> #endif
215,216c225,226
<     free(node->key);
<     free(node);
---
>     count_free(node->key);
>     count_free(node);
diff tree7/treetest.c tree8/treetest.c
48c48
<   printf("\ndelete the tree...");
---
>   printf("\ndelete the tree...\n");