Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Compiler Warning (level 1) C4364
Collapse the table of content
Expand the table of content

Compiler Warning (level 1) C4364

Error Message

#using for assembly 'file' previously seen at location(line_number) without as_friend attribute; as_friend not applied

A #using directive was repeated for a given metadata file, but the as_friend qualifier was not used in the first occurrence; the compiler will ignore the second as_friend.

For more information, see Friend Assemblies.


The following sample creates a component.

// C4364.cpp
// compile with: /clr /LD
ref class A {};

The following sample generates C4364.

// C4364_b.cpp
// compile with: /clr /W1 /c
#using " C4364.dll"
#using " C4364.dll" as_friend   // C4364

Community Additions

© 2015 Microsoft