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## 10.4\. Go Roadmap This page lists features and ideas being developed or discussed by the Go team. This list will be updated as work continues. The roadmap should be discussed on the golang-nuts mailing list. ### 10.4.1\. Language roadmap This is a list of language changes that are being considered. Appearance on this list is no guarantee that the change will be accepted. * Possibly rewrite restriction on goto across variable declarations. * Variant types. A way to define a type as being the union of some set of types. * Generics. An active topic of discussion. * Methods for operators, to allow a type to use arithmetic notation for expressions. ### 10.4.2\. Implementation roadmap * Improved garbage collector, most likely a reference counting collector with a cycle detector running in a separate core. * Debugger. * App Engine support. * Improved CGO including some mechanism for calling back from C to Go. * Improved implementation documentation. ### 10.4.3\. Gc compiler roadmap * Implement goto restrictions. * Generate DWARF debug info. * Provide gdb support for runtime facilities. * Improved optimization. * 5g: Better floating point support. ### 10.4.4\. Gccgo compiler roadmap * Implement goto restrictions. * Use goroutines rather than threads. * Separate gcc interface from frontend proper. * Use escape analysis to keep more data on stack. ### 10.4.5\. Done * Safe compilation mode: generate code that is guaranteed not to obtain an invalid memory address other than via import "unsafe". * Gccgo: garbage collection. * Native Client (NaCl) support. * SWIG support. * Simpler semicolon rules. * A more general definition of ... in parameter lists. * Explicit conversions from string to []byte and []int. * A function that will be run by the garbage collector when an item is freed (runtime.SetFinalizer). * Public continuous build and benchmark infrastructure (gobuilder). * Package manager (goinstall). * A means of recovering from a panic (recover).