From: Tom Lane Date: Fri, 17 Dec 2004 20:58:47 +0000 (+0000) Subject: array_map failed to insert correct result type in an empty array. X-Git-Tag: REL7_3_9~12 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e333705b84abc3f4de82979e9e4a20d286358aab;p=postgresql array_map failed to insert correct result type in an empty array. Per example from Florian Pflug. --- diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c index f864338897..bbed760376 100644 --- a/src/backend/utils/adt/arrayfuncs.c +++ b/src/backend/utils/adt/arrayfuncs.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/arrayfuncs.c,v 1.81 2002/09/18 21:35:22 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/arrayfuncs.c,v 1.81.2.1 2004/12/17 20:58:47 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1488,7 +1488,14 @@ array_map(FunctionCallInfo fcinfo, Oid inpType, Oid retType) /* Check for empty array */ if (nitems <= 0) - PG_RETURN_ARRAYTYPE_P(v); + { + /* Return empty array */ + result = (ArrayType *) palloc(sizeof(ArrayType)); + MemSet(result, 0, sizeof(ArrayType)); + result->size = sizeof(ArrayType); + result->elemtype = retType; + PG_RETURN_ARRAYTYPE_P(result); + } /* Lookup source and result types. Unneeded variables are reused. */ system_cache_lookup(inpType, false, &inp_typlen, &inp_typbyval,