DRAFT RELEASE NOTES — Introduction to Go 1.14

Go 1.14 is not yet released. These are work-in-progress release notes. Go 1.14 is expected to be released in February 2020.

Changes to the language

TODO

Ports

TODO

Native Client (NaCl)

As announced in the Go 1.13 release notes, Go 1.14 drops support for the Native Client platform (GOOS=nacl).

Tools

TODO

Go command

When the main module contains a top-level vendor directory and its go.mod file specifies go 1.14 or higher, the go command now defaults to -mod=vendor for operations that accept that flag. A new value for that flag, -mod=mod, causes the go command to instead load modules from the module cache (as when no vendor directory is present).




  When -mod=vendor is set (explicitly or by default), the
  go command now verifies that the main module's
  vendor/modules.txt file is consistent with its
  go.mod file.



  The go get command no longer accepts
  the -mod flag. Previously, the flag's setting either
  was ignored or
  caused the build to fail.



  The go command now includes snippets of plain-text error messages
  from module proxies and other HTTP servers.
  An error message will only be shown if it is valid UTF-8 and consists of only
  graphic characters and spaces.


Runtime


TODO



Core library


TODO


bytes/hash
  
    
      TODO: https://golang.org/cl/186877: add hashing package for bytes and strings
    



crypto/tls
  
    
      TODO: https://golang.org/cl/191976: remove SSLv3 support
    

    
      TODO: https://golang.org/cl/191999: remove TLS 1.3 opt-out
    

    
      The tls package no longer supports NPN and now only
      supports ALPN. In previous releases it supported both. There are
      no API changes and code should function identically as before.
      Most other clients & servers have already removed NPN support in
      favor of the standardized ALPN.
    



encoding/asn1
  
    
      TODO: https://golang.org/cl/126624: handle ASN1's string type BMPString
    



mime
  
    
      TODO: https://golang.org/cl/186927: update type of .js and .mjs files to text/javascript
    



plugin
  
    
      TODO: https://golang.org/cl/191617: add freebsd/amd64 plugin support
    





reflect
  
    
      StructOf now
      supports creating struct types with unexported fields, by
      setting the PkgPath field in
      a StructField element.
    



runtime
  
    
      TODO: https://golang.org/cl/187739: treat CTRL_CLOSE_EVENT, CTRL_LOGOFF_EVENT, CTRL_SHUTDOWN_EVENT as SIGTERM on Windows
    

    
      TODO: https://golang.org/cl/188297: don't forward SIGPIPE on macOS
    



Minor changes to the library


  As always, there are various minor changes and updates to the library,
  made with the Go 1 promise of compatibility
  in mind.



TODO