Compiler Warning C4439
'function' : function definition with a managed type in the signature must have a __clrcall calling convention
The compiler implicitly replaced a calling convention with __clrcall
. To resolve this warning, remove the __cdecl
or __stdcall
calling convention.
C4439 is always issued as an error. You can turn off this warning with the #pragma warning
or /wd
; see warning or /w, /W0, /W1, /W2, /W3, /W4, /w1, /w2, /w3, /w4, /Wall, /wd, /we, /wo, /Wv, /WX (Warning Level) for more information.
The following sample generates C4439.
// C4439.cpp
// compile with: /clr
void __stdcall f( System::String^ arg ) {} // C4439
void __clrcall f2( System::String^ arg ) {} // OK
void f3( System::String^ arg ) {} // OK