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Joe Tsai ee5af46172 encoding/json: avoid misleading errors under goexperiment.jsonv2
The jsontext package represents the location of JSON errors
using a JSON Pointer (RFC 6901). This uses the JSON type system.

Unfortunately the v1 json.UnmarshalTypeError assumes a Go struct-based
mechanism for reporting the location of errors
(and has historically never been implemented correctly since
it was a weird mix of both JSON and Go namespaces; see #43126).
Trying to map a JSON Pointer into UnmarshalTypeError.{Struct,Field}
is difficult to get right without teaching jsontext
about the Go type system.

To reduce the probability of misleading errors,
check whether the last token looks like a JSON array index
and if so, elide the phrase "into Go struct field".

Fixes #74801

Change-Id: Id2088ffb9c339a9238ed38c90223d86a89422842
Reviewed-on: https://go-review.googlesource.com/c/go/+/710676
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2025-10-14 12:20:23 -07:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api cmd/go, testing: add TB.ArtifactDir and -artifacts flag 2025-10-07 14:39:32 -07:00
doc cmd/go: unify "go fix" and "go vet" 2025-10-10 13:10:21 -07:00
lib lib/fips140: re-seal v1.0.0 2025-09-25 12:53:19 -07:00
misc all: replace strings.Split with strings.SplitSeq 2025-09-15 17:34:45 -07:00
src encoding/json: avoid misleading errors under goexperiment.jsonv2 2025-10-14 12:20:23 -07:00
test cmd/compile/internal/devirtualize: fix OCONVNOP assertion 2025-10-14 09:33:37 -07:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
README.md README: fix CC BY license name 2024-07-22 17:45:27 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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