postgres.git / summary / log / commit / refs

commit    65a69dfa08e212556d11e44a5a8a1861fd826ccd
Author:   Tom Lane <tgl@sss.pgh.pa.us>
Date:     Thu Apr 12 22:39:51 2018 +0000
First released in: 11.0, 9.3.23, 9.4.18, 9.5.13, 9.6.9, 10.4

    Fix bogus affix-merging code.
    
    NISortAffixes() compared successive compound affixes incorrectly,
    thus possibly failing to merge identical affixes, or (less likely)
    merging ones that shouldn't be merged.  The user-visible effects
    of this are unclear, to me anyway.
    
    Per bug #15150 from Alexander Lakhin.  It's been broken for a long time,
    so back-patch to all supported branches.
    
    Arthur Zakirov
    
    Discussion: https://postgr.es/m/152353327780.31225.13445405496721177988@wrigleys.postgresql.org


 src/backend/tsearch/spell.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/backend/tsearch/spell.c b/src/backend/tsearch/spell.c
index b9fdd77e198..65d99da292a 100644
--- a/src/backend/tsearch/spell.c
+++ b/src/backend/tsearch/spell.c
@@ -1963,8 +1963,10 @@ NISortAffixes(IspellDict *Conf)
 		if ((Affix->flagflags & FF_COMPOUNDFLAG) && Affix->replen > 0 &&
 			isAffixInUse(Conf, Affix->flag))
 		{
+			bool		issuffix = (Affix->type == FF_SUFFIX);
+
 			if (ptr == Conf->CompoundAffix ||
-				ptr->issuffix != (ptr - 1)->issuffix ||
+				issuffix != (ptr - 1)->issuffix ||
 				strbncmp((const unsigned char *) (ptr - 1)->affix,
 						 (const unsigned char *) Affix->repl,
 						 (ptr - 1)->len))
@@ -1972,7 +1974,7 @@ NISortAffixes(IspellDict *Conf)
 				/* leave only unique and minimals suffixes */
 				ptr->affix = Affix->repl;
 				ptr->len = Affix->replen;
-				ptr->issuffix = (Affix->type == FF_SUFFIX);
+				ptr->issuffix = issuffix;
 				ptr++;
 			}
 		}


[parent: b8ca984b2c73]