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Robert Griesemer efddb5ac61 go/types, types2: add user-friendly panics in Instantiate
Based on CL 784220 but adjusted to fit latest source status.

Replace opaque assert() calls in the exported Instantiate function with
explicit panics that spell out the violated precondition.

Internal assertions in instance() are unchanged since they guard invariants
unreachable from the public API.

Also, make error messages consistent.

This only affects incorrect calls of Instantiate which reported an error
or panicked before and will report an error or panic now, albeit now with
descriptive error messages.

Fixes #79709.

Change-Id: Iea21cfaf846d9d67f078d26345fe85c509eccae7
Reviewed-on: https://go-review.googlesource.com/c/go/+/791140
Reviewed-by: Mark Freeman <markfreeman@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2026-06-16 10:32:56 -07:00
.github .github: update PULL_REQUEST_TEMPLATE to match the latest instruction 2026-05-26 15:10:06 -07:00
api crypto/tls: add LocalCertificate to ConnectionState 2026-06-10 12:52:57 -07:00
doc doc/next: delete 2026-05-28 21:25:15 -07:00
lib lib/time: update to 2026b/2026b 2026-05-19 07:47:41 -07:00
misc all: replace strings.Split with strings.SplitSeq 2025-09-15 17:34:45 -07:00
src go/types, types2: add user-friendly panics in Instantiate 2026-06-16 10:32:56 -07:00
test runtime: in moveSliceNoCap, round size down to a whole multiple of element size 2026-06-16 07:45:10 -07:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore .gitignore: ignore go test artifacts 2025-11-10 12:41:03 -08:00
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

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