Bug 24786 – dmd does not compile a c file (ImportC not used)

Created attachment 1917 The c file I used to compile dmd cannot compile the attached hello.c file with ImportC System Windows 10 x64 19045.4894 Output of command ``` c:\work\swig_experiment>dmd -v example.c predefs DigitalMars LittleEndian D_Version2 all D_SIMD Windows Win64 CRuntime_Microsoft CppRuntime_Microsoft D_InlineAsm_X86_64 X86_64 D_LP64 assert D_PreConditions D_PostConditions D_Invariants D_ModuleInfo D_Exceptions D_TypeInfo D_HardFloat binary dmd version v2.109.1 config c:\winoss\dmd2\windows\bin64\sc.ini DFLAGS -Ic:\winoss\dmd2\windows\bin64\..\..\src\phobos -Ic:\winoss\dmd2\windows\bin64\..\..\src\druntime\import include c:\winoss\dmd2\windows\bin64\..\..\src\druntime\import\importc.h cl.exe /P /Zc:preprocessor /PD /nologo /utf-8 example.c /FIc:\winoss\dmd2\windows\bin64\..\..\src\druntime\import\importc.h /FiC:\Users\VASILI~1\AppData\Local\Temp\scuo.0 ``` PATH: ``` C:\Windows;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\dotnet\;C:\winoss\VSCodium\bin;C:\Program Files\RedHat\Podman\;c:\winoss\git\cmd;C:\winoss\Python312\Scripts\;C:\winoss\Python312\;C:\Users\VasilisAnagnostopoul\AppData\Local\Programs\Python\Launcher\;C:\Users\VasilisAnagnostopoul\AppData\Local\Microsoft\WindowsApps;C:\Users\VasilisAnagnostopoul\AppData\Local\Coursier\data\bin;C:\Users\VasilisAnagnostopoul\AppData\Local\Programs\Rancher Desktop\resources\resources\linux\bin\;C:\Users\VasilisAnagnostopoul\AppData\Local\Programs\Rancher Desktop\resources\resources\win32\bin\;C:\winoss\jdk-23\bin;C:\winoss\apache-maven-3.9.8\bin;C:\Users\VasilisAnagnostopoul\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\VasilisAnagnostopoul\AppData\Local\Apps\Janet\bin\;;"c:\winoss\clang+llvm-18.1.8-x86_64-pc-windows-msvc\bin";c:\winoss\dmd2\windows\bin64 ``` Is there any possibility it has to do with Corporate Antivirus? I use Sophos

What does the command to cl produce? ``` cl.exe /P /Zc:preprocessor /PD /nologo /utf-8 example.c /FIc:\winoss\dmd2\windows\bin64\..\..\src\druntime\import\importc.h /FiC:\Users\VASILI~1\AppData\Local\Temp\scuo.0 ```

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