Describe the problem

C:\Users\vhtmf\AppData\Local\Temp\.arduinoIDE-unsaved202414-28316-jorhob.tu2i\sketch_feb4a\sketch_feb4a.ino:8:1: error: 'E' does not name a type
 E D()
 ^
C:\Users\vhtmf\AppData\Local\Temp\.arduinoIDE-unsaved202414-28316-jorhob.tu2i\sketch_feb4a\sketch_feb4a.ino:8:3: error: expected initializer before 'D'
 E D()
   ^

exit status 1

Compilation error: 'E' does not name a type

To reproduce

template<typename T>
void C(T F)
{}
enum E
{
  OS
}
E D()
{
  return E::OS;
}
void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Expected behavior

I have verified this code in MSVC, and there should be no problem.

Arduino IDE version

版本：2.2.1 日期：2023-08-31T14:35:44.802Z CLI 版本：0.34.0 Copyright © 2024 Arduino SA

Operating system

Windows

Operating system version

版本 Windows 11 专业版 Insider Preview 版本号 23H2 安装日期 ‎2024/‎1/‎28 操作系统版本 26040.1000 体验 Windows Feature Experience Pack 1000.26040.1000.0

Additional context

No response

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details