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

exists if and only if locale of postmaster
was a different from C (or ru_RU.KOI8-R).

Please, apply patch for current CVS & 7.3.1

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

Magnus Naeslund

Author: bmomjian

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];