RepoJournal
Go

@golang

Go and the standard library — backend infrastructure at scale

Pick a date

  1. Fri 1 may
  2. Sat 2 may
  3. Sun 3 may
  4. Tue 5 may
  5. Wed 6 may
  6. Thu 7 may
  7. Fri 8 may
  8. Sat 9 may
  9. Sun 10 may
  10. Mon 11 may
  11. Tue 12 may
  12. Wed 13 may
  13. Thu 14 may
  14. Fri 15 may
  15. Sat 16 may
  16. Sun 17 may
  17. Mon 18 may
  18. Tue 19 may
  19. Wed 20 may
  20. Thu 21 may
  21. Sat 23 may
  22. Tue 26 may
  23. Wed 27 may
  24. Thu 28 may
  25. Fri 29 may
  26. Sat 30 may
  27. Sun 31 may
  28. Mon 8 jun
  29. Tue 9 jun
  30. Today 10 jun

The Wire · Showcase

HTTP/2 API RESTORED FOR GO 1.27 COMPATIBILITY

By RepoJournal · Filed · About Go

Go's http2 package accidentally dropped critical symbols in the 1.27 build — they're back now, preserving compatibility for applications relying on ErrNoCachedConn, ErrPushLimitReached, and friends.

The http2 wrapping implementation in golang/net [1] lost four error types and one constant during refactoring, breaking any code that caught or referenced them. Cherry Mui's team restored ErrNoCachedConn, ErrPushLimitReached, ErrRecursivePush, and TrailerPrefix to their original locations, plus added FrameWriteRequest methods back as no-ops to prevent runtime surprises. Separately, QUIC buffer slicing is now fixed [2] — overlapping stream data was being written multiple times instead of deduplicated, causing spurious FINAL_SIZE_ERROR crashes. On the stdlib side, importer.ForCompiler is officially un-deprecated [3] after the deprecation warning was meant to apply only to a parameter, not the entire function. Runtime/cgo also regained critical acquire/release synchronization around malloc [4] that was accidentally dropped, fixing concurrency bugs in #67800 and #78479.

Action items

References

  1. [1] http2: avoid API changes when built with go1.27 golang/net
  2. [2] quic: fix buffer slicing when handling overlapping stream data golang/net
  3. [3] go/importer: un-deprecate importer.ForCompiler golang/go
  4. [4] runtime/cgo: add acquire/release back around malloc golang/go

FAQ

What changed in Go on May 9, 2026?
Go's http2 package accidentally dropped critical symbols in the 1.27 build — they're back now, preserving compatibility for applications relying on ErrNoCachedConn, ErrPushLimitReached, and friends.
What should Go teams do about it?
Update golang/net to pick up http2 symbol restoration and QUIC fixes • Rebuild with latest Go tip if using runtime/cgo — malloc synchronization is restored • Monitor compiler inlining and ARM64 changes for potential codegen differences
Which Go repositories shipped on May 9, 2026?
golang/net, golang/go

Related across the cluster

For your repos

The showcase is a teaser.
Your wire is the product.

Same engine. Different stack. Below: what changes when the wire is yours.

Showcase wire

  • •14 famous open source orgs
  • •One wire per day
  • •Public, generic
  • •Read on the web, when you remember

Your wire

  • →Up to 1,500 of your repos - orgs, deps, vendors
  • →Morning and evening briefs
  • →Action items routed to your team
  • →Slack delivery, email, breaking-news CVE alerts

Want a hands-on demo first? Ask a current user for an invite link.