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wire 2026-06-09
stories 17
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$ the-wire · showcase

GOPLS SHEDS DEAD CODE, SIMD BRIDGE BREAKS GO BUILD

By RepoJournal · Filed · About Go · Composed from the cited sources · methodology

gopls removed an unused subcommand and cleaned house across internal APIs, but a missing logic gate in cmd/go is crashing simple SIMD programs.

The tools team shipped cleanup across gopls: the 'gopls bug' subcommand is gone [1], replaced by a test harness in 'gopls execute', and an unused interval field got pruned from the filewatcher [2]. These are hygiene wins that ship with zero friction. More urgent: generic methods in go/ssa were leaking into RuntimeTypes and breaking analysis tools, now fixed [3]. A diagnostics reporting bug in gopls' MCP mode was misattributing errors when processing multiple files [4], and duplicate function declarations were triggering internal errors in stub method generation [5]. Across the stack, the net package fixed HTTP/2 Content-Length header validation per RFC 9112 [6] and corrected SVCB record parameter ordering in DNS messages [9]. HTTP/3 now supports gzip like HTTP/1 and HTTP/2 [8]. But the real blocker: SIMD bridge packages are missing from cmd/go's test import logic, causing panics on vanilla 'go run' with simd/archsimd imports [7]. That's a showstopper for anyone trying the new SIMD APIs.

Action items

References

  1. [1] gopls/internal/cmd: remove 'gopls bug' subcommand ↗ golang/tools
  2. [2] gopls/internal/filewatcher: remove unused interval field ↗ golang/tools
  3. [3] go/ssa: reject generic methods from RuntimeTypes ↗ golang/tools
  4. [4] gopls/internal/mcp: fix reporting in go_diagnostics tool ↗ golang/tools
  5. [5] gopls/internal/golang/stubmethods: fix internal error (missing type) ↗ golang/tools
  6. [6] net/http/internal/http2: reject non-identical duplicate Content-Length headers ↗ golang/go
  7. [7] cmd/go: include simd bridge package in compiled test imports ↗ golang/go
  8. [8] internal/http3: add gzip support to transport ↗ golang/net
  9. [9] dns/dnsmessage: correctly validate SVCB record parameter order ↗ golang/net

$ ls golang/reviews/ # the step-back reads

the week in review FIPS 140 crypto fixes land across SHA-3, TLS 1.2, HKDF the month in review Go toolchain patches three CVEs as gopls hits v0.24.0
Full archive → Weekly reviews →

Quick answers

What shipped in Go on June 9, 2026?
gopls removed an unused subcommand and cleaned house across internal APIs, but a missing logic gate in cmd/go is crashing simple SIMD programs. In total, 17 commits landed.
What were the notable Go updates?
gopls/internal/cmd: remove 'gopls bug' subcommand, gopls/internal/filewatcher: remove unused interval field, and go/ssa: reject generic methods from RuntimeTypes.
♥

$ log @golang --recent

RISC-V Zfa assembly support, and a faster archsimd unifier 9 shipped Plan 9 Mkdir race fixed, riscv64 gets clobberdead mode 7 shipped gopls closes a CVE on dash-prefixed module paths, and the exp collections get a Set 52 shipped Compiler stops lifting unsafe.Pointer arithmetic 35 shipped

$ log --all # elsewhere on the wire

Agent Security Quiet day in agent security as guard coverage reaches four clients Alignment & Post-training verl defaults Ascend RL mode, open-instruct unblocks SFT packing

$ ls showcases/

Safety Evals AI Red Teaming Agent Security Interpretability Alignment & Post-training

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