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The Go programming language
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Robert Griesemer 969ab34e46 go/types, types2: don't panic for invalid assignments of comma-ok expressions 
The relevant code was broken with CL 478218. Before that CL,
Checker.assignVar used to return the assigned type, or nil,
in case of failure. Checker.recordCommaOkTypes used to take
two types (not two operands), and if one of those types was
nil, it would simply not record. CL 478218, lost that (nil)
signal.

This change consistently reports an assignment check failure
by setting x.mode to invalid for initVar and assignVar and
then tests if x.mode != invalid before recording a comma-ok
expression.

Fixes #59371.

Change-Id: I193815ff3e4b43e3e510fe25bd0e72e0a6a816c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/486135
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-04-19 02:10:00 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api debug/elf: support zstd compression 2023-04-18 20:34:36 +00:00
doc doc: correct spelling on placeholder 2023-04-13 23:15:09 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc cmd/go: add check for unknown godebug setting 2023-04-18 13:19:19 +00:00
src go/types, types2: don't panic for invalid assignments of comma-ok expressions 2023-04-19 02:10:00 +00:00
test cmd/compile: remove memequal call from string compares in more cases 2023-04-18 21:31:33 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +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: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
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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

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.