[svn-r8899]

Purpose:
Bug Fix

Description:
Calling H5Sset_extent_simple to change a dataspace's maxdims from nonzero to
zero causes errors (infinite loops, seg faults, asserts) because the pointer
to the maximum size isn't cleaned up properly

Solution:
Clean up that pointer.  Added a test for this case.

Platforms tested:
sleipnir (very minor change)

1 files changed, 3 insertions, 0 deletions

diff --git a/src/H5S.c b/src/H5S.c
index fe54afb..ebdbbfb 100644
--- a/src/H5S.c
+++ b/src/H5S.c
@@ -1367,6 +1367,9 @@ H5S_set_extent_simple (H5S_t *space, unsigned rank, const hsize_t *dims,
             space->extent.max = H5FL_ARR_MALLOC(hsize_t,rank);
             HDmemcpy(space->extent.max, max, sizeof(hsize_t) * rank);
         } /* end if */
+        else {
+           space->extent.max = NULL;
+        }
     }
 
     /* Selection related cleanup */