model-checker : fix detection of dangling pointers in system state comparison

[simgrid.git] / src / xbt / mmalloc / mmalloc.c

diff --git a/src/xbt/mmalloc/mmalloc.c b/src/xbt/mmalloc/mmalloc.c
index 04f6731..fd71075 100644 (file)
--- a/src/xbt/mmalloc/mmalloc.c
+++ b/src/xbt/mmalloc/mmalloc.c
@@ -4,7 +4,7 @@
    Written May 1989 by Mike Haertel.
    Heavily modified Mar 1992 by Fred Fish for mmap'd version. */
 
-/* Copyright (c) 2010. The SimGrid Team.
+/* Copyright (c) 2010-2013. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -117,14 +117,13 @@ static void *register_morecore(struct mdesc *mdp, size_t size)
 
     /* mark the space previously occupied by the block info as free by first marking it
      * as occupied in the regular way, and then freing it */
-    for (it=0; it<BLOCKIFY(mdp->heapsize * sizeof(malloc_info)); it++)
+    for (it=0; it<BLOCKIFY(mdp->heapsize * sizeof(malloc_info)); it++){
       newinfo[BLOCK(oldinfo)+it].type = 0;
+      newinfo[BLOCK(oldinfo)+it].busy_block.ignore = 0;
+    }
 
     newinfo[BLOCK(oldinfo)].busy_block.size = BLOCKIFY(mdp->heapsize * sizeof(malloc_info));
     newinfo[BLOCK(oldinfo)].busy_block.busy_size = size;
-    newinfo[BLOCK(oldinfo)].busy_block.ignore = 0;
-    newinfo[BLOCK(oldinfo)].busy_block.equal_to = NULL;
-    //newinfo[BLOCK(oldinfo)].busy_block.bt_size = 0;// FIXME setup the backtrace
     mfree(mdp, (void *) oldinfo);
     mdp->heapsize = newsize;
   }
@@ -204,7 +203,6 @@ void *mmalloc_no_memset(xbt_mheap_t mdp, size_t size)
       /* Update our metadata about this fragment */
       candidate_info->busy_frag.frag_size[candidate_frag] = requested_size;
       candidate_info->busy_frag.ignore[candidate_frag] = 0;
-      candidate_info->busy_frag.equal_to[candidate_frag] = NULL;
       //xbt_backtrace_no_malloc(candidate_info->busy_frag.bt[candidate_frag],XBT_BACKTRACE_SIZE);
       //xbt_libunwind_backtrace(candidate_info->busy_frag.bt[candidate_frag],XBT_BACKTRACE_SIZE);
 
@@ -226,7 +224,6 @@ void *mmalloc_no_memset(xbt_mheap_t mdp, size_t size)
       for (i = 1; i < (size_t) (BLOCKSIZE >> log); ++i) {
         mdp->heapinfo[block].busy_frag.frag_size[i] = -1;
         mdp->heapinfo[block].busy_frag.ignore[i] = 0;
-        mdp->heapinfo[block].busy_frag.equal_to[i] = NULL;
       }
       mdp->heapinfo[block].busy_frag.nfree = i - 1;
       mdp->heapinfo[block].freehook.prev = NULL;
@@ -237,7 +234,6 @@ void *mmalloc_no_memset(xbt_mheap_t mdp, size_t size)
       /* mark the fragment returned as busy */
       mdp->heapinfo[block].busy_frag.frag_size[0] = requested_size;
       mdp->heapinfo[block].busy_frag.ignore[0] = 0;
-      mdp->heapinfo[block].busy_frag.equal_to[0] = NULL;
       //xbt_backtrace_no_malloc(mdp->heapinfo[block].busy_frag.bt[0],XBT_BACKTRACE_SIZE);
       //xbt_libunwind_backtrace(mdp->heapinfo[block].busy_frag.bt[0],XBT_BACKTRACE_SIZE);
       
@@ -285,7 +281,6 @@ void *mmalloc_no_memset(xbt_mheap_t mdp, size_t size)
           mdp->heapinfo[block+it].type = 0;
           mdp->heapinfo[block+it].busy_block.busy_size = 0;
           mdp->heapinfo[block+it].busy_block.ignore = 0;
-          mdp->heapinfo[block+it].busy_block.equal_to = NULL;
         }
         mdp->heapinfo[block].busy_block.size = blocks;
         mdp->heapinfo[block].busy_block.busy_size = requested_size;
@@ -327,7 +322,6 @@ void *mmalloc_no_memset(xbt_mheap_t mdp, size_t size)
       mdp->heapinfo[block+it].type = 0;
       mdp->heapinfo[block+it].busy_block.busy_size = 0;
       mdp->heapinfo[block+it].busy_block.ignore = 0;
-      mdp->heapinfo[block+it].busy_block.equal_to = NULL;
     }
     mdp->heapinfo[block].busy_block.size = blocks;
     mdp->heapinfo[block].busy_block.busy_size = requested_size;