Thank you very much, you catch it :). This bug had a long life, because it

bmomjian · bmomjian · commit a2bd3e208591 · 2002-12-06T05:15:02.000Z
exists if and only if locale of postmaster
was a different from C (or ru_RU.KOI8-R).

Please, apply patch for current CVS &amp; 7.3.1

Magnus Naeslund(f) wrote:
&gt; Ok, I nailed the bug, but i'm not sure what the correct fix is.
&gt; Attached tsearch_morph.diff that remedies this problem by avoiding it.
&gt; Also there's a debug aid patch if someone would like to know how i
&gt; finally found it out :)
&gt;
&gt; There problem in the lemmatize() function is that GETDICT(...) returned
&gt; a value not handled (BYLOCALE).
&gt; The value (-1) and later used as an index into the dicts[] array.
&gt; After that everything went berserk stack went crazy somehow so trapping
&gt; the fault sent me to the wrong place, and every time i read the value it
&gt; was positive ;)
&gt;
&gt; So now i just return the initial word passed to the lemmatize function,
&gt; because i don't know what to do with it.

Magnus Naeslund
diff --git a/contrib/tsearch/morph.c b/contrib/tsearch/morph.c
@@ -173,6 +173,10 @@ lemmatize(char *word, int *len, int type)
 			/* word is stopword */
 			return NULL;
 		}
+		else if (nd == BYLOCALE)
+		{
+			continue; /* no dict for current locale */
+		}
 		else
 		{
 			dict = &dicts[nd];

Original file line number	Diff line number	Diff line change
`@@ -173,6 +173,10 @@ lemmatize(char word, int len, int type)`
`173`	`173`	`/* word is stopword */`
`174`	`174`	`return NULL;`
`175`	`175`	`}`
	`176`	`+ else if (nd == BYLOCALE)`
	`177`	`+ {`
	`178`	`+ continue; /* no dict for current locale */`
	`179`	`+ }`
`176`	`180`	`else`
`177`	`181`	`{`
`178`	`182`	`dict = &dicts[nd];`