Comment.

[pintos-anon] / src / threads / malloc.c

diff --git a/src/threads/malloc.c b/src/threads/malloc.c
index 20773548d9ee2499b68a22e89e3b222694ef985c..8e6b4591ea87ecae09337ae5d741c89a68bdcb9a 100644 (file)
--- a/src/threads/malloc.c
+++ b/src/threads/malloc.c
@@ -161,7 +161,7 @@ calloc (size_t a, size_t b)
   void *p;
   size_t size;
 
-  /* Calculate block size. */
+  /* Calculate block size and make sure it fits in size_t. */
   size = a * b;
   if (size < a || size < b)
     return NULL;
@@ -198,7 +198,7 @@ free (void *p)
     }
 
 #ifndef NDEBUG
-  memset (b, 0xcd, d->block_size);
+  memset (b, 0xcc, d->block_size);
 #endif
   
   lock_acquire (&d->lock);