Fix c5471 signal handling + deallocation bug

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@44 42af7a65-404d-4744-a932-0658087f49c3

mm/mm_free.c

@@ -68,6 +68,8 @@ void free(FAR void *mem)
   FAR struct mm_freenode_s *prev;
   FAR struct mm_freenode_s *next;
 
+  vdbg("Freeing %p\n", mem);
+
   /* Protect against attempts to free a NULL reference */
 
   if (!mem)

mm/mm_initialize.c

@@ -165,6 +165,8 @@ void mm_addregion(FAR void *heapstart, size_t heapsize)
   heapend  = MM_ALIGN_DOWN((size_t)heapstart + (size_t)heapsize);
   heapsize = heapend - heapbase;
 
+  lldbg("Region %d: base=%p size=%d\n", IDX+1, heapstart, heapsize);
+
   /* Add the size of this region to the total size of the heap */
 
   g_heapsize += heapsize;

mm/mm_malloc.c

@@ -199,5 +199,6 @@ FAR void *malloc(size_t size)
     }
 
   mm_givesemaphore();
+  vdbg("Allocated %p\n", ret);
   return ret;
 }