description

title

ms.date

f1_keywords

helpviewer_keywords

ms.assetid

Learn more about: Compiler Warning (level 1 and level 4) C4949

Compiler Warning (level 1 and level 4) C4949

11/04/2016

C4949

C4949

34f45a05-c115-49cb-9f67-0bd4f0735d9b

Compiler Warning (level 1 and level 4) C4949

pragmas 'managed' and 'unmanaged' are meaningful only when compiled with '/clr[:option]'

The compiler ignores the managed and unmanaged pragmas if the source code is not compiled with /clr. This warning is informational.

The following sample generates C4949:

// C4949.cpp
// compile with: /LD /W1
#pragma managed   // C4949

When #pragma unmanaged is used without /clr, C4949 is a level 4 warning.

The following sample generates C4949:

// C4949b.cpp
// compile with: /LD /W4
#pragma unmanaged   // C4949