From: David Rowley <drowley@postgresql.org>
Date: Tue, 1 Aug 2023 13:39:47 +0000 (+1200)
Subject: Fix overly strict Assert in jsonpath code
X-Git-Tag: REL_17_BETA1~2063
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=deae1657ee6dd6f7b3effab3d44429d5434f5bbf;p=thirdparty%2Fpostgresql.git

Fix overly strict Assert in jsonpath code

This was failing for queries which try to get the .type() of a
jpiLikeRegex.  For example:

select jsonb_path_query('["string", "string"]',
                        '($[0] like_regex ".{7}").type()');

Reported-by: Alexander Kozhemyakin
Bug: #18035
Discussion: https://postgr.es/m/18035-64af5cdcb5adf2a9@postgresql.org
Backpatch-through: 12, where SQL/JSON path was added.
---

diff --git a/src/backend/utils/adt/jsonpath.c b/src/backend/utils/adt/jsonpath.c
index 7891fde3105..c5ba3b7f1d0 100644
--- a/src/backend/utils/adt/jsonpath.c
+++ b/src/backend/utils/adt/jsonpath.c
@@ -1014,7 +1014,8 @@ jspGetNext(JsonPathItem *v, JsonPathItem *a)
 			   v->type == jpiDouble ||
 			   v->type == jpiDatetime ||
 			   v->type == jpiKeyValue ||
-			   v->type == jpiStartsWith);
+			   v->type == jpiStartsWith ||
+			   v->type == jpiLikeRegex);
 
 		if (a)
 			jspInitByBuffer(a, v->base, v->nextPos);