Oct 22, 2021 · Oct 20, 2021
diff --git a/engine.c b/engine.c
 *
 * Write both magic and varsion_num at once.
 */
 ptrack_write_chunk(ptrack_tmp_fd, &crc, (char *) &ptrack_map->magic,

 /*
 * Previously we read from the field magic, now we read from the beginning
 * of the structure PtrackMapHdr. Make sure nothing has changed since then.
 */
 StaticAssertStmt(
 offsetof(PtrackMapHdr, magic) == 0,
 "old write format for PtrackMapHdr.magic and PtrackMapHdr.version_num "
 "is not upward-compatible");

 ptrack_write_chunk(ptrack_tmp_fd, &crc, (char *) ptrack_map,
   offsetof(PtrackMapHdr, init_lsn));

 init_lsn = pg_atomic_read_u64(&ptrack_map->init_lsn);
Original file line number	Diff line number	Diff line change
Expand Up		@@ -394,7 +394,17 @@ ptrackCheckpoint(void)
		*
		* Write both magic and varsion_num at once.
		*/
		ptrack_write_chunk(ptrack_tmp_fd, &crc, (char *) &ptrack_map->magic,

		/*
		* Previously we read from the field magic, now we read from the beginning
		* of the structure PtrackMapHdr. Make sure nothing has changed since then.
		*/
		StaticAssertStmt(
		offsetof(PtrackMapHdr, magic) == 0,
		"old write format for PtrackMapHdr.magic and PtrackMapHdr.version_num "
		"is not upward-compatible");

		ptrack_write_chunk(ptrack_tmp_fd, &crc, (char *) ptrack_map,
		offsetof(PtrackMapHdr, init_lsn));

		init_lsn = pg_atomic_read_u64(&ptrack_map->init_lsn);
Expand Down