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Russ Cox 97a2ed74ad cmd/go: add detection of toolchain switch loops 
This happens mainly during testing because the virtual
toolchain switch is not terribly robust, and if you accidentally
try to exec "1.23" instead of "go1.23" it will let you, but it
won't work right.

Of course, although we feel pretty good about the non-test
implementation, perhaps it has a toolchain switch loop lurking too,
or perhaps one will be introduced in the future.

To handle the test bug, and just in case we have a real bug later,
add detection of toolchain switch loops with clear messages.

Also fixes a bug in setting the -lang flag properly when invoking
the Go compiler: this is the first test using 'go 1.21.x' lines
during a build.

For #57001.

Change-Id: I0ece3dd718596689a23b677cf08ddf32ea97bc57
Reviewed-on: https://go-review.googlesource.com/c/go/+/498436
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
 		2023-05-31 15:20:23 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api crypto/tls: add VersionName 2023-05-25 00:13:32 +00:00
doc doc: document WER and SEH changes in Go 1.21 2023-05-31 15:10:27 +00:00
lib/time lib/time: update to 2023c/2023c 2023-05-03 20:14:11 +00:00
misc misc/wasm: set PATH variable in exec 2023-05-26 17:21:14 +00:00
src cmd/go: add detection of toolchain switch loops 2023-05-31 15:20:23 +00:00
test go/types, types2: don't infer type argument for unused parameter in interfaces 2023-05-25 21:37:01 +00:00
.gitattributes
…
.gitignore cmd/dist: refactor generated cgo-support logic 2023-04-20 17:26:46 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
LICENSE
…
PATENTS
…
README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
go.env cmd/go: set default GOTOOLCHAIN in GOROOT/go.env 2023-05-23 18:06:37 +00:00

README.md

The Go Programming Language

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

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attributions 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.

Download and Install

Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

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.

Contributing

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.