bug:Unhandled exception: Not Implemented: Crystal::System::Signal.trap (NotImplementedError) from D:\Dev\Crystal\src\crystal\system\win32\signal.cr:5 in 'trap'

[lansn]

Description

[Unhandled exception: Not Implemented: Crystal::System::Signal.trap (NotImplementedError)
from D:\Dev\Crystal\src\crystal\system\win32\signal.cr:5 in 'trap']

Steps to Reproduce

step 1: create file: src/web.cr
require "kemal"

get "/" do
"Hello World!"
end

Kemal.run

step 2: crystal run src/web.cr

crystal run src\web.cr
Unhandled exception: Not Implemented: Crystal::System::Signal.trap (NotImplementedError)
from D:\Dev\Crystal\src\crystal\system\win32\signal.cr:5 in 'trap'
from D:\Dev\Crystal\src\signal.cr:117 in 'trap'
from lib\kemal\src\kemal.cr:92 in 'setup_trap_signal'
from lib\kemal\src\kemal.cr:39 in 'run'
from lib\kemal\src\kemal.cr:16 in 'run'
from src\web.cr:11 in '__crystal_main'
from D:\Dev\Crystal\src\crystal\main.cr:129 in 'main_user_code'
from D:\Dev\Crystal\src\crystal\main.cr:115 in 'main'
from D:\Dev\Crystal\src\crystal\main.cr:141 in 'main'
from D:\Dev\Crystal\src\crystal\system\win32\wmain.cr:37 in 'wmain'
from D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 in '__scrt_common_main_seh'
from C:\Windows\System32\KERNEL32.DLL +95044 in 'BaseThreadInitThunk'
from C:\Windows\SYSTEM32\ntdll.dll +337585 in 'RtlUserThreadStart'
Error deleting file: 'C:\Users\bl\AppData\Local\crystal\cache\crystal-run-web.exe.tmp.exe': Permission denied (File::AccessDeniedError)
from D:\a\crystal\crystal\src\crystal\system\win32\file.cr:283 in 'delete:raise_on_missing'
from D:\a\crystal\crystal\src\compiler\crystal\command.cr:266 in 'execute'
from D:\a\crystal\crystal\src\compiler\crystal\command.cr:231 in 'run_command'
from D:\a\crystal\crystal\src\compiler\crystal.cr:11 in '__crystal_main'
from D:\a\crystal\crystal\src\crystal\main.cr:141 in 'main'
from D:\a\crystal\crystal\src\crystal\system\win32\wmain.cr:37 in 'wmain'
from D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 in '__scrt_common_main_seh'
from C:\Windows\System32\KERNEL32.DLL +95044 in 'BaseThreadInitThunk'
from C:\Windows\SYSTEM32\ntdll.dll +337585 in 'RtlUserThreadStart'
Error: you've found a bug in the Crystal compiler. Please open an issue, including source code that will allow us to reproduce the bug: https://github.com/crystal-lang/crystal/issues

Versions

win10 x64 22H2 19045.3448, crystal 1.9.2, kemal 1.4.0

[Giorgi Kavrelishvili]

I remember Kemal implementing the platform agnostic trapping, but now when I view the source code it seems like it might have been lost in commits.

Anyway you can extend the Kemal module for now for a temporary fix

module Kemal
  private def self.setup_trap_signal
    Process.on_interrupt {
      Kemal.stop
      exit
    }
  end
end

Save this into a file named extension.cr and require it right after you require the Kemal lib, for example:

require "kemal"
require "./extension.cr"

I will make a PR to fix this issue.