[svn-r12596] Refactored how external files are opened and closed.

Object header locations (H5O_loc_t's) can now "hold open" a file and
decrement its open object count when they close.  This means that
locations (H5O_loc_t's and H5G_loc_t's) should always be freed.

Added more thorough tests to ensure that external files are closed.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/H5AC.c b/src/H5AC.c
index 49625b9..454078f 100644
--- a/src/H5AC.c
+++ b/src/H5AC.c
@@ -1893,6 +1893,7 @@ H5AC_protect(H5F_t *f,
 
     /* check args */
     HDassert(f);
+    HDassert(f->shared);
     HDassert(f->shared->cache);
     HDassert(type);
     HDassert(type->flush);