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-rw-r--r--src/H5Rpublic.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/H5Rpublic.h b/src/H5Rpublic.h
index cadc826..bef73db 100644
--- a/src/H5Rpublic.h
+++ b/src/H5Rpublic.h
@@ -55,7 +55,10 @@ typedef struct {
/* Needs to be large enough to store largest haddr_t in a worst case machine (ie. 8 bytes currently) */
} hobj_ref_t;
-#define H5R_DSET_REG_REF_BUF_SIZE (sizeof(haddr_t)+sizeof(int))
+#define H5R_DSET_REG_REF_BUF_SIZE (sizeof(haddr_t)+4)
+/* 4 is used instead of sizeof(int) to permit portability between
+ the Crays and other machines (the heap ID is always encoded as an int32 anyway)
+*/
/* Dataset Region reference structure for user's code */
typedef struct {
unsigned char heapid[H5R_DSET_REG_REF_BUF_SIZE]; /* Buffer to store heap ID and index */