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-rw-r--r--src/H5FDcore.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/src/H5FDcore.c b/src/H5FDcore.c
index 4b26335..1b3d877 100644
--- a/src/H5FDcore.c
+++ b/src/H5FDcore.c
@@ -79,10 +79,9 @@ typedef struct H5FD_core_fapl_t {
* REGION_OVERFLOW: Checks whether an address and size pair describe data
* which can be addressed entirely in memory.
*/
-#define MAXADDR ((haddr_t)(~(size_t)0))
-#define ADDR_OVERFLOW(A) (HADDR_UNDEF==(A) || \
- ((A) & ~(haddr_t)MAXADDR))
-#define SIZE_OVERFLOW(Z) ((Z) & ~(hsize_t)MAXADDR)
+#define MAXADDR ((haddr_t)((~(size_t)0)-1))
+#define ADDR_OVERFLOW(A) (HADDR_UNDEF==(A) || (A) > (haddr_t)MAXADDR)
+#define SIZE_OVERFLOW(Z) ((Z) > (hsize_t)MAXADDR)
#define REGION_OVERFLOW(A,Z) (ADDR_OVERFLOW(A) || SIZE_OVERFLOW(Z) || \
HADDR_UNDEF==(A)+(Z) || \
(size_t)((A)+(Z))<(size_t)(A))