[ruby/fiddle] windows: add Fiddle.win32_last_socket_error{,=}

GitHub: fix GH-72

Users can't use WSAGetLastError() with Ruby 3.0 or later because
rb_funcall() resets the last socket error internally.

Users can get the last socket error by Fiddle.win32_last_socket_error.

Reported by Kentaro Hayashi. Thanks!!!

https://github.com/ruby/fiddle/commit/76158db00a

1 files changed, 12 insertions, 0 deletions

diff --git a/ext/fiddle/lib/fiddle.rb b/ext/fiddle/lib/fiddle.rb
index 3fdf525b4c..4512989310 100644
--- a/ext/fiddle/lib/fiddle.rb
+++ b/ext/fiddle/lib/fiddle.rb
@@ -17,6 +17,18 @@ module Fiddle
     def self.win32_last_error= error
       Thread.current[:__FIDDLE_WIN32_LAST_ERROR__] = error
     end
+
+    # Returns the last win32 socket +Error+ of the current executing
+    # +Thread+ or nil if none
+    def self.win32_last_socket_error
+      Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__]
+    end
+
+    # Sets the last win32 socket +Error+ of the current executing
+    # +Thread+ to +error+
+    def self.win32_last_socket_error= error
+      Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__] = error
+    end
   end
 
   # Returns the last +Error+ of the current executing +Thread+ or nil if none