blog: Go 1.3 release announcement

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+Go 1.3 is released
+18 Jun 2014
+
+Andrew Gerrand
+
+* Go 1.3 is released
+
+Today we are happy to announce the release of [[http://golang.org/doc/go1.3][Go 1.3]].
+This release comes six months after our last major release and provides better
+performance, improved tools, support for running Go in new environments, and more.
+All Go users should upgrade to Go 1.3.
+You can grab the release from our [[http://golang.org/dl/][downloads page]] and
+find the full list of improvements and fixes in the
+[[http://golang.org/doc/go1.3][release notes]].
+What follows are some highlights.
+
+[[http://godoc.org/code.google.com/p/go.tools/cmd/godoc][Godoc]],
+the Go documentation server, now performs static analysis.
+When enabled with the -analysis flag, analysis results are presented
+in both the source and package documentation views, making it easier
+than ever to navigate and understand Go programs.
+See [[http://golang.org/lib/godoc/analysis/help.html][the documentation]] for the details.
+
+The gc toolchain now supports the Native Client (NaCl) execution sandbox on the
+32- and 64-bit Intel architectures.
+This permits the safe execution of untrusted code, useful in environments such as the
+[[http://blog.golang.org/playground][Playground]].
+To set up NaCl on your system see the [[http://golang.org/wiki/NativeClient][NativeClient wiki page]].
+
+Also included in this release is experimental support for the DragonFly BSD,
+Plan 9, and Solaris operating systems. To use Go on these systems you must
+[[http://golang.org/doc/install/source][install from source]].
+
+Changes to the runtime have improved the
+[[http://golang.org/doc/go1.3#performance][performance]] of Go binaries,
+with an improved garbage collector, a new
+[[http://golang.org/s/contigstacks]["contiguous" goroutine stack management strategy]],
+a faster race detector, and improvements to the regular expression engine.
+
+As part of the general [[http://golang.org/s/go13linker][overhaul]] of the Go
+linker, the compilers and linkers have been refactored. The instruction
+selection phase that was part of the linker has been moved to the compiler.
+This can speed up incremental builds for large projects.
+
+The [[http://golang.org/doc/go1.3#garbage_collector][garbage collector]] is now
+precise when examining stacks (collection of the heap has been precise since Go
+1.1), meaning that a non-pointer value such as an integer will never be
+mistaken for a pointer and prevent unused memory from being reclaimed. This
+change affects code that uses package unsafe; if you have unsafe code you
+should read the [[http://golang.org/doc/go1.3#garbage_collector][release notes]]
+carefully to see if your code needs updating.
+
+We would like to thank the many people who contributed to this release;
+it would not have been possible without your help.
+
+So, what are you waiting for?
+Head on over to the [[http://golang.org/dl/][downloads page]] and start hacking.