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Make array_cat more paranoid about checking datatypes in empty arrays.

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This commit is contained in:
Tom Lane 2004-12-17 20:59:58 +00:00
parent bd3bc4076e
commit d0a6042f9f
1 changed files with 17 additions and 17 deletions
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34
src/backend/utils/adt/array_userfuncs.c
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@ -6,7 +6,7 @@
* Copyright (c) 2003, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/array_userfuncs.c,v 1.13 2004/08/29 05:06:49 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/array_userfuncs.c,v 1.14 2004/12/17 20:59:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -165,6 +165,22 @@ array_cat(PG_FUNCTION_ARGS)
v1 = PG_GETARG_ARRAYTYPE_P(0);
v2 = PG_GETARG_ARRAYTYPE_P(1);
element_type1 = ARR_ELEMTYPE(v1);
element_type2 = ARR_ELEMTYPE(v2);
/* Check we have matching element types */
if (element_type1 != element_type2)
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
errmsg("cannot concatenate incompatible arrays"),
errdetail("Arrays with element types %s and %s are not "
"compatible for concatenation.",
format_type_be(element_type1),
format_type_be(element_type2))));
/* OK, use it */
element_type = element_type1;
/*----------
* We must have one of the following combinations of inputs:
* 1) one empty array, and one non-empty array
@ -200,22 +216,6 @@ array_cat(PG_FUNCTION_ARGS)
"compatible for concatenation.",
ndims1, ndims2)));
element_type1 = ARR_ELEMTYPE(v1);
element_type2 = ARR_ELEMTYPE(v2);
/* Check we have matching element types */
if (element_type1 != element_type2)
ereport(ERROR,
(errcode(ERRCODE_DATATYPE_MISMATCH),
errmsg("cannot concatenate incompatible arrays"),
errdetail("Arrays with element types %s and %s are not "
"compatible for concatenation.",
format_type_be(element_type1),
format_type_be(element_type2))));
/* OK, use it */
element_type = element_type1;
/* get argument array details */
lbs1 = ARR_LBOUND(v1);
lbs2 = ARR_LBOUND(v2);