Import wiredtiger-wiredtiger-2.8.0-511-gd8fb874.tar.gz from wiredtiger branch mongodb-3.4

ref: fb1663e..d8fb874

SERVER-24580  Performance is poor when WiredTiger cache is full
WT-2319       Add statistics around fsync calls
WT-2408       Windows error translation layer
WT-2514       log path name is an empty string.
WT-2541       Add statistics for number of threads currently in read/write
WT-2605       C tests focused on different schema types needed for join and other APIs
WT-2622       unit test failed in test_cursor_random.test_cursor_random.test_cursor_random_multiple_page_records
WT-2652       Logging code improvements
WT-2664       Change eviction so any eviction thread can find candidates
WT-2667       Enhance WiredTiger Evergreen testing
WT-2668       Create join statistics that are useful and are easy to understand
WT-2671       dump more information about the file layout in verify debug mode
WT-2672       Handle system calls that don't set errno
WT-2676       Don't use key size in column store in-memory splits.
WT-2677       Fix JSON output so only printable ASCII is produced (seen on Solaris)
WT-2682       add option to configure WiredTiger with strict compiler flags
WT-2683       WiredTiger no longer needs to return non-zero disk sizes
WT-2685       hazard pointer failure from clear walk
WT-2686       logging subsystem core dump
WT-2687       test suite should verify the exit status of the wt utility
WT-2689       Use after free in WT_SESSION::open_cursor
WT-2691       Use wrappers for ctype functions to avoid sign extension errors
WT-2692       Fix race in file system example
WT-2696       Missing log records with large updates
WT-2698       Test/recovery hung
WT-2702       Under high thread load, WiredTiger exceeds cache size
WT-2704       test/format hung on bengal
WT-2706       Test failure running random-abort recovery test
WT-2707       dist/s_label enhancements, and error jump cleanups
WT-2709       connection reconfigure segfault in __wt_conn_cache_pool_destroy
WT-2710       WT_FILE_HANDLE_INMEM no longer needs an off field
WT-2712       Coverity 1356928 and 1356929: ASSERT_SIDE_EFFECT
WT-2713       document WT_PANIC so pluggable filesystems can panic.
WT-2714       lint
WT-2715       random-abort test may write partial record at the end
WT-2720       Pull request tester not running Python suite
WT-2722       s_label or s_label_loop false positive
WT-2724       Eviction workers created on open exit immediately
SERVER-24425  WiredTiger changes for MongoDB 3.3.9

1 files changed, 1 insertions, 1 deletions

diff --git a/src/third_party/wiredtiger/ext/test/kvs_bdb/kvs_bdb.c b/src/third_party/wiredtiger/ext/test/kvs_bdb/kvs_bdb.c
index 05c522ff41f..3d78bca1d1b 100644
--- a/src/third_party/wiredtiger/ext/test/kvs_bdb/kvs_bdb.c
+++ b/src/third_party/wiredtiger/ext/test/kvs_bdb/kvs_bdb.c
@@ -831,7 +831,7 @@ kvs_session_open_cursor(WT_DATA_SOURCE *wtds, WT_SESSION *session,
 		goto err;
 	}
 	cursor->config_bitfield =
-	    v.len == 2 && isdigit(v.str[0]) && v.str[1] == 't';
+	    v.len == 2 && isdigit((u_char)v.str[0]) && v.str[1] == 't';
 
 	if ((ret = writelock(wtext, session, &ds->rwlock)) != 0)
 		goto err;