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-rw-r--r--test/fiddle/test_function.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/fiddle/test_function.rb b/test/fiddle/test_function.rb
index a67c38d556..df632925ad 100644
--- a/test/fiddle/test_function.rb
+++ b/test/fiddle/test_function.rb
@@ -101,7 +101,7 @@ module Fiddle
if WINDOWS
def test_win32_last_error
kernel32 = Fiddle.dlopen("kernel32")
- args = [kernel32["SetLastError"], [TYPE_LONG], TYPE_VOID]
+ args = [kernel32["SetLastError"], [-TYPE_LONG], TYPE_VOID]
args << Function::STDCALL if Function.const_defined?(:STDCALL)
set_last_error = Function.new(*args)
assert_nil(Fiddle.win32_last_error)