Detours DLL does not DLL_PROCESS_ATTACH if a statically linked DLL or delay loaded DLL is not found

[m-celikba]

Consider a program MyProgram.exe with 2 dependencies: MyDetoured.dll and MyDelayLoaded.dll.
MyDetoured.dll is injected as first entry in the import libs of MyProgram.exe using setdll.

When MyProgram.exe runs, I can see MyDetoured.dll being loaded before MyDelayLoaded.dll and its DLL_PROCESS_ATTACH is called.

However when MyDelayLoaded.dll is not found, MyProgram.exe:

• loads MyDetoured.dll
• tries to load MyDelayLoaded.dll and fails with a dll not found pop up error
• DLL_PROCESS_ATTACH of MyDetoured.dll is not called <--- issue here

I see this by using "gflags -i Program.exe +sls" which traces dll calls.

I thought Detours are guaranteed to get called.
Is this a bug or is it a limitation that Detours doesn't work when a delay loaded DLL is not resolved at runtime ?

EDIT: this happens also with statically linked DLL