tinygo-org/tinygo v0.24.0

0.24.0

on GitHub

This release adds a few pretty major features to TinyGo: the embed package, recover() (for most non-wasm architectures), and generics. It also adds initial (incomplete) support for Go 1.19, which is still in beta. Apart from that, we have the usual assortment of new features and bug fixes and we add the Badger 2040 board.

One possible breaking change is that we will now use a few newer WebAssembly features. If this is a problem, let us know and we can add a new target without these newer features. We use them because it lowers the binary size of the .wasm files.

Here is the complete changelog:

• command line
  • remove support for go 1.15
  • remove support for LLVM 11 and LLVM 12
  • add initial Go 1.19 beta support
  • test: fix package/... syntax
• compiler
  • add support for the embed package
  • builder: improve error message for "command not found"
  • builder: add support for ThinLTO on MacOS and Windows
  • builder: free LLVM objects after use, to reduce memory leaking
  • builder: improve -no-debug error messages
  • cgo: be more strict: CGo now requires every Go file to import the headers it needs
  • compiler: alignof(func) is 1 pointer, not 2
  • compiler: add support for type parameters (aka generics)
  • compiler: implement recover() built-in function
  • compiler: support atomic, volatile, and LLVM memcpy-like functions in defer
  • compiler: drop support for macos syscalls via inline assembly
  • interp: do not try to interpret past task.Pause()
  • interp: fix some buggy localValue handling
  • interp: do not unroll loops
  • transform: fix MakeGCStackSlots that caused a possible GC bug on WebAssembly
• standard library
  • os: enable os.Stdin for baremetal target
  • reflect: add Value.UnsafePointer method
  • runtime: scan GC globals conservatively on Windows, MacOS, Linux and Nintendo Switch
  • runtime: add per-map hash seeds
  • runtime: handle nil map write panics
  • runtime: add stronger hash functions
  • syscall: implement Getpagesize
• targets
  • atmega2560: support UART1-3 + example for uart
  • avr: use compiler-rt for improved float64 support
  • avr: simplify timer-based time
  • avr: fix race condition in stack write
  • darwin: add support for GOARCH=arm64 (aka Apple Silicon)
  • darwin: support -size=short and -size=full flag
  • rp2040: replace sleep 'busy loop' with timer alarm
  • rp2040: align api for PortMaskSet, PortMaskClear
  • rp2040: fix GPIO interrupts
  • samd21, samd51, nrf52840: add support for USBHID (keyboard / mouse)
  • wasm: update wasi-libc version
  • wasm: use newer WebAssembly features
• boards
  • add Badger 2040
  • matrixportal-m4: attach USB DP to the correct pin
  • teensy40: add I2C support
  • wioterminal: fix I2C definition