win32/resolv.rb: check pointer size

* ext/win32/lib/win32/resolv.rb: check pointer size first, NT if
  it is larger than 4 as Windows 9X are 32-bit mode only.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53829 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 5 deletions

diff --git a/ext/win32/lib/win32/resolv.rb b/ext/win32/lib/win32/resolv.rb
index 2e724e3257..8dc9e0d88b 100644
--- a/ext/win32/lib/win32/resolv.rb
+++ b/ext/win32/lib/win32/resolv.rb
@@ -35,14 +35,16 @@ module Win32
     end
   end
 
-kernel32 = Module.new do
+nt = Module.new do
+  break true if [nil].pack("p").size > 4
   extend Importer
   dlload "kernel32"
+  getv = extern "int GetVersionExA(void *)", :stdcall
+  info = [ 148, 0, 0, 0, 0 ].pack('V5') + "\0" * 128
+  getv.call(info)
+  break info.unpack('V5')[4] == 2  # VER_PLATFORM_WIN32_NT
 end
-getv = kernel32.extern "int GetVersionExA(void *)", :stdcall
-info = [ 148, 0, 0, 0, 0 ].pack('V5') + "\0" * 128
-getv.call(info)
-if info.unpack('V5')[4] == 2  # VER_PLATFORM_WIN32_NT
+if nt
 #====================================================================
 # Windows NT
 #====================================================================