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Diffstat (limited to 'storage/myisam/mi_key.c')
-rw-r--r--storage/myisam/mi_key.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/storage/myisam/mi_key.c b/storage/myisam/mi_key.c
index 43babb2968b..4bd01dcbfa0 100644
--- a/storage/myisam/mi_key.c
+++ b/storage/myisam/mi_key.c
@@ -551,7 +551,7 @@ ulonglong retrieve_auto_increment(MI_INFO *info,const uchar *record)
switch (keyseg->type) {
case HA_KEYTYPE_INT8:
- s_value= (longlong) *(char*)key;
+ s_value= (longlong) *(const signed char*) key;
break;
case HA_KEYTYPE_BINARY:
value=(ulonglong) *(uchar*) key;