Issues

• Raise minimum supported Go version to 1.26

  tinygo-org/tinygo#5984 · Filter by author davecheney opened on Oct 22, 2026 · 0.45
  

• compiler: make([]T, n) fails with "slice element type is too big" for 64 KiB+ element types on 32-bit targets

  tinygo-org/tinygo#5972 · Filter by author thesyncim opened on Oct 20, 2026

• LLVM 23 builds for Cortex-M0 fail to link: missing __aeabi_uread8/__aeabi_uwrite8

  tinygo-org/tinygo#5967 · Filter by author davecheney opened on Oct 20, 2026 · 0.44
  2

• crypto/tls: the js target gets the thin wrapper, which has no TLS in a browser

  tinygo-org/tinygo#5961 · Filter by author 0pcom opened on Oct 20, 2026

• builder: a large build keeps go/ssa and the program module in memory through the link

  tinygo-org/tinygo#5960 · Filter by author 0pcom opened on Oct 20, 2026

• os: Hostname returns ErrNotImplemented on linux

  tinygo-org/tinygo#5959 · Filter by author 0pcom opened on Oct 20, 2026

• sync: Pool keeps every item forever

  tinygo-org/tinygo#5958 · Filter by author 0pcom opened on Oct 20, 2026

• runtime: resetting or stopping a timer allocates a new node under the threads scheduler

  tinygo-org/tinygo#5957 · Filter by author 0pcom opened on Oct 20, 2026

• runtime: the timer queue is a sorted list, so many timers cost O(n) per operation

  tinygo-org/tinygo#5956 · Filter by author 0pcom opened on Oct 20, 2026

• js: os file operations always fail, even with a filesystem behind the WASI imports

  tinygo-org/tinygo#5955 · Filter by author 0pcom opened on Oct 20, 2026

• syscall, os: EBADFD is missing on js, and SameFile and Lchown on targets without a file system

  tinygo-org/tinygo#5954 · Filter by author 0pcom opened on Oct 20, 2026

• runtime/trace: FlightRecorder is missing, and debug.WriteHeapDump has no body

  tinygo-org/tinygo#5953 · Filter by author 0pcom opened on Oct 20, 2026

• compileopts: set the noasm and http2legacy build tags by default

  tinygo-org/tinygo#5952 · Filter by author 0pcom opened on Oct 20, 2026

• runtime: golang.org/x/sys/cpu and gvisor fail to link because their assembly has no bodies

  tinygo-org/tinygo#5951 · Filter by author 0pcom opened on Oct 20, 2026

• builder: a WebAssembly build runs ThinLTO's post-link pipeline on one thread

  tinygo-org/tinygo#5950 · Filter by author 0pcom opened on Oct 20, 2026

• js: go.run never resolves when main returns after the program has waited

  tinygo-org/tinygo#5949 · Filter by author 0pcom opened on Oct 20, 2026

• js: os.Args and the environment ignore go.argv and go.env

  tinygo-org/tinygo#5948 · Filter by author 0pcom opened on Oct 20, 2026

• os: File.SyscallConn returns ErrNotImplemented for files with a descriptor

  tinygo-org/tinygo#5947 · Filter by author 0pcom opened on Oct 20, 2026

• runtime/debug: SetCrashOutput is missing

  tinygo-org/tinygo#5946 · Filter by author 0pcom opened on Oct 20, 2026

• runtime/debug: SetGCPercent and FreeOSMemory do nothing with bdwgc

  tinygo-org/tinygo#5945 · Filter by author 0pcom opened on Oct 20, 2026

• runtime/pprof: every profile returns "unimplemented"

  tinygo-org/tinygo#5944 · Filter by author 0pcom opened on Oct 20, 2026

• runtime: bdwgc keeps free heap mapped for 7 collections

  tinygo-org/tinygo#5943 · Filter by author 0pcom opened on Oct 20, 2026

• runtime: bdwgc aborts with "Unexpected mark stack overflow" when there are thousands of goroutines

  tinygo-org/tinygo#5942 · Filter by author 0pcom opened on Oct 20, 2026

• runtime: gvisor fails to link on gopark, goready and the runtime semaphores

  tinygo-org/tinygo#5941 · Filter by author 0pcom opened on Oct 20, 2026

• Static build against LLVM 23: cc1as and the link list need updating

  tinygo-org/tinygo#5933 · Filter by author 0pcom opened on Oct 19, 2026