Warning C33005
VARIANT 'var' was provided as an
_In_or_InOut_parameter but was not initialized (expression 'expr')
Remarks
This warning is triggered when an uninitialized VARIANT is passed to a function as an input-only or input/output parameter. For example, a pass-by-reference parameter without an _Out_ SAL annotation.
Code analysis name: VARIANTCLEAR_UNINITFUNCPARAM
Example
The following sample code causes warning C33005:
#include <Windows.h>
void bar(VARIANT* v); // v is assumed to be input/output
void foo()
{
VARIANT v;
bar(&v); // C33005
// ......
VariantClear(&v); // OK, assumed to be initialized by bar
}
To correct these warnings, initialize the VARIANT before passing it to a function
as input-only or input/output.
#include <Windows.h>
void bar(VARIANT* v); // v is assumed to be input/output
void foo()
{
VARIANT v;
VariantInit(&v);
bar(&v); // OK
// ......
VariantClear(&v); // OK, assumed to be initialized by bar
}