blob: 0997d5ff7e60f3aa9001270d54e20e78895e855e (
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--- a/src/dbinc/db_page.h
+++ b/src/dbinc/db_page.h
@@ -256,6 +256,17 @@ typedef struct __pg_crypto {
*/
} PG_CRYPTO;
+/*
+ * With most compilers sizeof(PG_CRYPTO) == 38. However some ABIs
+ * require it to be padded to 40 bytes. The padding must be excluded
+ * from our size calculations due to the 16-byte alignment requirement
+ * for crypto.
+ *
+ * A similar problem applies to PG_CHKSUM, but it's too late to change
+ * that.
+ */
+#define SIZEOF_PG_CRYPTO 38
+
typedef struct _db_page {
DB_LSN lsn; /* 00-07: Log sequence number. */
db_pgno_t pgno; /* 08-11: Current page number. */
@@ -291,7 +302,7 @@ typedef struct _db_page {
*/
#define P_INP(dbp, pg) \
((db_indx_t *)((u_int8_t *)(pg) + SIZEOF_PAGE + \
- (F_ISSET((dbp), DB_AM_ENCRYPT) ? sizeof(PG_CRYPTO) : \
+ (F_ISSET((dbp), DB_AM_ENCRYPT) ? SIZEOF_PG_CRYPTO : \
(F_ISSET((dbp), DB_AM_CHKSUM) ? sizeof(PG_CHKSUM) : 0))))
#define P_IV(dbp, pg) \
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