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The Go programming language
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Michael Pratt a6fb97b6a7 os: explicitly check for invalid FD in NewFile 
CL 497075 refactored NewFile to unconditionally dereference the file
returned by newFile. However, newFile can return nil if passed a
negative FD, which now causes a crash.

Resolve this by moving the invalid check earlier in NewFile, which also
lets us avoid a useless fcntl syscall on a negative FD.

Since we convert to int to check sign, adjust newFile to take an int
rather than uintptr, which cleans up a lot of conversions.

Fixes #60406

Change-Id: I382a74e22f1cc01f7a2dcf1ff4efca6a79c4dd57
Reviewed-on: https://go-review.googlesource.com/c/go/+/497877
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-05-24 20:19:46 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api slices: add sorting and comparison functions 2023-05-23 23:33:29 +00:00
doc doc: write various runtime-related release notes 2023-05-23 17:30:52 +00:00
lib/time lib/time: update to 2023c/2023c 2023-05-03 20:14:11 +00:00
misc wasm: remove redundant calls to setTimeout and clearTimeout 2023-05-22 17:47:47 +00:00
src os: explicitly check for invalid FD in NewFile 2023-05-24 20:19:46 +00:00
test Revert "cmd/compile: sparse conditional constant propagation" 2023-05-24 14:39:34 +00:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.gitignore cmd/dist: refactor generated cgo-support logic 2023-04-20 17:26:46 +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: set default GOTOOLCHAIN in GOROOT/go.env 2023-05-23 18:06:37 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
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.