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Go 1.17 is released

Submitted by Roy Schestowitz on Tuesday 17th of August 2021 02:31:07 AM Filed under
Development

Today the Go team is thrilled to release Go 1.17, which you can get by visiting the download page.

This release brings additional improvements to the compiler, namely a new way of passing function arguments and results. This change has shown about a 5% performance improvement in Go programs and reduction in binary sizes of around 2% for amd64 platforms. Support for more platforms will come in future releases.

Go 1.17 also adds support for the 64-bit ARM architecture on Windows, letting gophers run Go natively on more devices.

We’ve also introduced pruned module graphs in this release. Modules that specify go 1.17 or higher in their go.mod file will have their module graphs include only the immediate dependencies of other Go 1.17 modules, not their full transitive dependencies. This should help avoid the need to download or read go.mod files for otherwise irrelevant dependencies—saving time in everyday development.

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Also: Go 1.17 is released

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Programming language: Go 1.17 trims dependencies and expands...

Submitted by Roy Schestowitz on Sunday 22nd of August 2021 04:17:50 AM.
  • Programming language: Go 1.17 trims dependencies and expands platform connections

    The team behind Go has released version 1.17 of the programming language. As with the previous releases, most of the innovations are under the hood: The compiler has been optimized for the benefit of the performance of the programs created and the Go team has simplified the dependencies in the module graphs. At the language level, the release is a package unsafe new functions for handling pointers.

    Finally, there are some additions to the platforms. After Go 1.16 brought a native connection to Apple Silicon, the current release aims at 64-bit ARM architectures under Windows including the integration of C code via the tool cgo. The latter now also works for 64-bit MIPS architectures under OpenBSD.

Go can only get better: v1.17 hones in on performance

Submitted by Roy Schestowitz on Monday 23rd of August 2021 06:22:01 AM.
  • Go can only get better: v1.17 hones in on performance and security

    It has been a while since a Go release included some actual language enhancements, but version 1.17 looks to change things up. The now available update to the Google-bred programming language also offers some security improvements, advancements in lazy loading, and help with deprecations.

    Two of the language enhancements, unsafe.Add and unsafe.Slice, are meant to help developers write code that follows the rules for valid pointer use. While Add adds a len argument to a pointer and returns the updated pointer, Slice “returns a slice whose underlying array starts at ptr and whose length and capacity are len” for expression ptr of type *T, unsafe.Slice(ptr, len). Other than that Go now allows the conversion of a slice into an array pointer.

    The Go team also implemented a new way of passing function arguments via registers which should speed up packages and programs when compared to the old approach that used the stack for that. Backwards compatibility with assembly functions is maintained through adapter functions the compiler generates. These convert calling conventions and shouldn’t be noticeable in most cases, however the team notes that a small overhead is to be expected when “calling an assembly function indirectly from Go via a func value, and calling Go functions from assembly”.

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