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-rw-r--r--test/fheap.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/test/fheap.c b/test/fheap.c
index 6c3a8ac..1be952f 100644
--- a/test/fheap.c
+++ b/test/fheap.c
@@ -16458,6 +16458,33 @@ main(void)
if(H5Pset_file_space_strategy(fcpl, H5F_FSPACE_STRATEGY_FSM_AGGR, TRUE, (hsize_t)1) < 0)
TEST_ERROR
fapl = def_fapl;
+ /* This is a fix for the daily test failure from the checkin for libver bounds. */
+ /*
+ * Many tests failed the file size check when comparing (a) and (b) as below:
+ * --Create a file and close the file. Got the initial file size (a).
+ * --Reopen the file, perform fractal heap operations, and close the file.
+ * Got the file size (b).
+ * The cause for the file size differences:
+ * When the file is initially created with persisting free-space and with
+ * (earliest, latest) libver bounds, the file will have version 2 superblock
+ * due to non-default free-space handling. As the low bound is earliest,
+ * the library uses version 1 object header when creating the superblock
+ * extension message.
+ * When the file is reopened with the same libver bounds, the file's low
+ * bound is upgraded to v18 because the file has version 2 superblock.
+ * When the library creates the superblock extension message on file close,
+ * the library uses version 2 object header for the superblock extension
+ * message since the low bound is v18.
+ * This leads to the discrepancy in file sizes as the file is persisting
+ * free-space and there is object header version differences.
+ * The fix:
+ * Set libver bounds in fapl to (v18, latest) so that the file created in the
+ * test routines will have low bound set to v18. This will cause the
+ * library to use version 2 object header for the superblock extension
+ * message.
+ */
+ if(H5Pset_libver_bounds(fapl, H5F_LIBVER_V18, H5F_LIBVER_LATEST) < 0)
+ TEST_ERROR
break;
case 2:
if(H5Pset_file_space_strategy(fcpl, H5F_FSPACE_STRATEGY_PAGE, FALSE, (hsize_t)1) < 0)