myisam/ft_boolean_search.c

    -trunc* bug - don't increase yweaks in this case

myisam/ft_boolean_search.c

@@ -345,11 +345,12 @@ static void _ftb_init_index_search(FT_INFO *ftb)
         if (ftbe->flags & FTB_FLAG_NO ||                     /* 2 */
              ftbe->up->ythresh - ftbe->up->yweaks >1)        /* 1 */
         {
-          FTB_EXPR *top_ftbe=ftbe->up->up;
+          FTB_EXPR *top_ftbe=ftbe->up;
           ftbw->docid[0]=HA_OFFSET_ERROR;
-          for (ftbe=ftbw->up; ftbe != top_ftbe; ftbe=ftbe->up)
-            if (!(ftbe->flags & FTB_FLAG_NO))
-              ftbe->yweaks++;
+          for (ftbe=(FTB_EXPR *)ftbw;
+               ftbe != top_ftbe && !(ftbe->flags & FTB_FLAG_NO);
+               ftbe=ftbe->up)
+              ftbe->up->yweaks++;
           ftbe=0;
           break;
         }
@@ -363,7 +364,7 @@ static void _ftb_init_index_search(FT_INFO *ftb)
       else
         reset_tree(& ftb->no_dupes);
     }
-     
+
     if (_ft2_search(ftb, ftbw, 1))
       return;
   }

mysql-test/r/fulltext.result

@@ -148,6 +148,9 @@ select * from t1 where MATCH a,b AGAINST ('+(support collections) +foobar*' IN B
 a	b
 select * from t1 where MATCH a,b AGAINST ('+(+(support collections)) +foobar*' IN BOOLEAN MODE);
 a	b
+select * from t1 where MATCH a,b AGAINST ('+collections -supp* -foobar*' IN BOOLEAN MODE);
+a	b
+Full-text indexes	are called collections
 select * from t1 where MATCH a,b AGAINST ('"xt indexes"' IN BOOLEAN MODE);
 a	b
 select * from t1 where MATCH a,b AGAINST('"space model' IN BOOLEAN MODE);

mysql-test/t/fulltext.test

@@ -67,6 +67,7 @@ select * from t1 where MATCH a,b AGAINST ('"xt indexes"' IN BOOLEAN MODE);
 
 select * from t1 where MATCH a,b AGAINST ('+(support collections) +foobar*' IN BOOLEAN MODE);
 select * from t1 where MATCH a,b AGAINST ('+(+(support collections)) +foobar*' IN BOOLEAN MODE);
+select * from t1 where MATCH a,b AGAINST ('+collections -supp* -foobar*' IN BOOLEAN MODE);
 select * from t1 where MATCH a,b AGAINST ('"xt indexes"' IN BOOLEAN MODE);
 
 # bug#2708, bug#3870 crash