diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 8e33550e0..80a3d26c0 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -637,6 +637,9 @@ dll_crt0_1 ()
 
   (void) SetErrorMode (SEM_FAILCRITICALERRORS);
 
+  /* Initialize the heap. */
+  heap_init ();
+
   /* Initialize events. */
   events_init ();
 
@@ -670,9 +673,6 @@ dll_crt0_1 ()
       longjmp (ciresrv->jmp, ciresrv->cygpid);
     }
 
-  /* Initialize the heap. */
-  heap_init ();
-
   /* Initialize our process table entry. Don't use the parent info for
      dynamically loaded case. */
   pinfo_init ((dynamically_loaded) ? NULL : info);
diff --git a/winsup/cygwin/fork.cc b/winsup/cygwin/fork.cc
index 40158385d..54c668137 100644
--- a/winsup/cygwin/fork.cc
+++ b/winsup/cygwin/fork.cc
@@ -445,13 +445,13 @@ fork ()
 
 
       MALLOC_CHECK;
-      rc = fork_copy (pi, "dll data", dll_data_start, dll_data_end,
-		      dll_bss_start, dll_bss_end, NULL);
       rc = fork_copy (pi, "user/cygwin data",
 		      user_data->data_start, user_data->data_end,
 		      user_data->bss_start, user_data->bss_end,
+		      ch.heapbase, ch.heapptr,
 		      stack_here, ch.stackbottom,
-		      NULL);
+		      dll_data_start, dll_data_end,
+		      dll_bss_start, dll_bss_end, NULL);
 
       MALLOC_CHECK;
       if (!rc)
@@ -526,22 +526,14 @@ fork ()
         }
 
       sync_with_parent ("after longjmp.", TRUE);
+      ProtectHandle (hParent);
 
 #ifdef DEBUGGING
       char c;
       if (GetEnvironmentVariable ("FORKDEBUG", &c, 1))
 	try_to_debug ();
-      char buf[80];
-      if (GetEnvironmentVariable ("CYGWIN_FORK_SLEEP", buf, sizeof (buf)))
-	{
-	  small_printf ("Sleeping %d after fork, pid %u\n", atoi (buf), GetCurrentProcessId ());
-	  Sleep (atoi(buf));
-	}
 #endif
 
-      heap_init ();
-      ProtectHandle (hParent);
-
       /* If we've played with the stack, stacksize != 0.  That means that
 	 fork() was invoked from other than the main thread.  Make sure that
 	 when the "main" thread exits it calls do_exit, like a normal process.
diff --git a/winsup/cygwin/heap.cc b/winsup/cygwin/heap.cc
index 5989aefca..ce1cab5c4 100644
--- a/winsup/cygwin/heap.cc
+++ b/winsup/cygwin/heap.cc
@@ -20,8 +20,6 @@ details. */
 
 static unsigned page_const = 0;
 
-HANDLE cygwin_heap;
-
 static  __inline__ int
 getpagesize(void)
 {
@@ -38,9 +36,9 @@ heap_init ()
   /* If we're the forkee, we must allocate the heap at exactly the same place
      as our parent.  If not, we don't care where it ends up.  */
 
+  page_const = getpagesize();
   if (brkbase)
     {
-
       DWORD chunk = brkchunk;	/* allocation chunk */
       /* total size commited in parent */
       DWORD allocsize = (char *) brktop - (char *) brkbase;
@@ -48,13 +46,14 @@ heap_init ()
       DWORD reserve_size = chunk * ((allocsize + (chunk - 1)) / chunk);
 
       /* Loop until we've managed to reserve an adequate amount of memory. */
-      void *p;
+      char *p;
       for (;;)
 	{
-	  p = MapViewOfFileEx (cygwin_heap, FILE_MAP_COPY, 0L, 0L, 0L, brkbase);
+	  p = (char *) VirtualAlloc (brkbase, reserve_size,
+				     MEM_RESERVE, PAGE_READWRITE);
 	  if (p)
 	    break;
-	  if ((reserve_size -= (page_const + 1)) <= allocsize)
+	  if ((reserve_size -= page_const) <= allocsize)
 	    break;
 	}
       if (p == NULL)
@@ -62,25 +61,20 @@ heap_init ()
 		   brkchunk, myself->pid);
       if (p != brkbase)
 	api_fatal ("heap allocated but not at %p", brkbase);
-      if (!VirtualAlloc (brkbase, allocsize, MEM_COMMIT, PAGE_READWRITE))
+      if (! VirtualAlloc (brkbase, allocsize, MEM_COMMIT, PAGE_READWRITE))
 	api_fatal ("MEM_COMMIT failed, %E");
     }
   else
     {
-      page_const = getpagesize() - 1;
       /* Initialize page mask and default heap size.  Preallocate a heap
        * to assure contiguous memory.  */
-      cygwin_heap = CreateFileMapping ((HANDLE) 0xffffffff, &sec_all, PAGE_WRITECOPY | SEC_RESERVE, 0L, brkchunk, NULL);
-      if (cygwin_heap == NULL)
-	api_fatal ("2. unable to allocate shared memory for heap, heap_chunk_size %d, %E", brkchunk);
-      
-      brk = brktop = brkbase = MapViewOfFile (cygwin_heap, 0, 0L, 0L, 0);
-//    brk = brktop = brkbase = VirtualAlloc(NULL, brkchunk, MEM_RESERVE, PAGE_NOACCESS);
+      brk = brktop = brkbase = VirtualAlloc(NULL, brkchunk, MEM_RESERVE, PAGE_NOACCESS);
       if (brkbase == NULL)
 	api_fatal ("2. unable to allocate heap, heap_chunk_size %d, %E",
 		   brkchunk);
     }
 
+  page_const--;
   malloc_init ();
 }
 
diff --git a/winsup/cygwin/shared.h b/winsup/cygwin/shared.h
index e51b9ec8f..5c5ea8348 100644
--- a/winsup/cygwin/shared.h
+++ b/winsup/cygwin/shared.h
@@ -172,7 +172,7 @@ pinfo *__stdcall procinfo (int n);
 
 enum
 {
-  PROC_MAGIC = 0xaf09f000,
+  PROC_MAGIC = 0xaf08f000,
   PROC_FORK = PROC_MAGIC + 1,
   PROC_EXEC = PROC_MAGIC + 2,
   PROC_SPAWN = PROC_MAGIC + 3,