go: runtime/cgo: gcc_libinit_windows.c:136:27: error: implicit declaration of function '_beginthread'

What version of Go are you using (go version)?

1.20.3

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

Windows 10 Intel x86-64

What did you do?

I tried to run a simple code to execute a function from a DLL file.

package main

import "C"

import (
	"fmt"
	"log"
	"runtime"
	"syscall"
	"unsafe"
)

const (
	SDL_INIT_TIMER          = 0x00000001
	SDL_INIT_AUDIO          = 0x00000010
	SDL_INIT_VIDEO          = 0x00000020
	SDL_INIT_JOYSTICK       = 0x00000200
	SDL_INIT_HAPTIC         = 0x00001000
	SDL_INIT_GAMECONTROLLER = 0x00002000
	SDL_INIT_EVENTS         = 0x00004000
	SDL_INIT_SENSOR         = 0x00008000
	SDL_INIT_NOPARACHUTE    = 0x00100000
	SDL_INIT_EVERYTHING     = SDL_INIT_TIMER | SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_EVENTS | SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_GAMECONTROLLER | SDL_INIT_SENSOR
)

func main() {
	runtime.LockOSThread()

	err := x()
	if err != nil {
		log.Fatal(err)
	}
}

func x() (err error) {
	var sdl2 = syscall.NewLazyDLL("SDL2.dll")
	SDL_Init := sdl2.NewProc("SDL_Init")
	SDL_GetError := sdl2.NewProc("SDL_GetError")

	var ret uintptr
	ret, _, _ = SDL_Init.Call(SDL_INIT_EVERYTHING)
	fmt.Printf("Return: %d\n", ret)

	ret, _, _ = SDL_GetError.Call()
	fmt.Printf("Return: %d\n", ret)
	s := C.GoString(ret)
	fmt.Printf("Error: %s\n", s)
	C.free(unsafe.Pointer(ret))

	return nil
}

CGO is enabled, gcc is installed with Cygwin64 and has version 11.3.0-1. SDL is the latest version, 2.26.5.

What did you expect to see?

I expected not to see errors at compile time.

What did you see instead?

# runtime/cgo
gcc_libinit_windows.c: In function '_cgo_beginthread':
gcc_libinit_windows.c:136:27: error: implicit declaration of function '_beginthread'; did you mean '_cgo_beginthread'? [-Werror=implicit-function-declaration]
  136 |                 thandle = _beginthread(func, 0, arg);
      |                           ^~~~~~~~~~~~
      |                           _cgo_beginthread
cc1: all warnings being treated as errors

Compilation finished with exit code 1