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>
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Gopher image by Renee French, licensed under Creative Commons 4.0 Attribution license.
Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.
Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.
Official binary distributions are available at https://go.dev/dl/.
After downloading a binary release, visit https://go.dev/doc/install for installation instructions.
If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.
Go is the work of thousands of contributors. We appreciate your help!
To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.
Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.