[svn-r8844] Purpose:

    Bug fix

Description:
    The "shared" raw B-tree node can get freed before all the B-tree nodes
had been flushed out to disk and released by the cache.

Solution:
    Implement a simple reference counting wrapper for objects in the library
and use it to hold the shared raw B-tree nodes so they aren't freed before all
references to them in memory are released.

Platforms tested:
    Solaris 2.7 (arabica)
    FreeBSD 4.10 (sleipnir)
    IRIX64 6.5 (modei4)

1 files changed, 5 insertions, 0 deletions

diff --git a/src/H5G.c b/src/H5G.c
index ee3d5a4..27f43e8 100644
--- a/src/H5G.c
+++ b/src/H5G.c
@@ -1524,6 +1524,7 @@ done:
     /* If we started with a NULL grp_ent and we copied something into it, free the entry information */
     if(null_grp && group_copy)
         H5G_free_ent_name(grp_ent);
+
    FUNC_LEAVE_NOAPI(ret_value);
 }
 
@@ -1661,6 +1662,10 @@ H5G_mkroot (H5F_t *f, hid_t dxpl_id, H5G_entry_t *ent)
     if (f->shared->root_grp)
         HGOTO_DONE(SUCCEED);
 
+    /* Create information needed for group nodes */
+    if(H5G_node_init(f)<0)
+        HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "unable to create group node info")
+
     /*
      * If there is no root object then create one. The root group always has
      * a hard link count of one since it's pointed to by the boot block.