NGWS SDK Documentation  

This is preliminary documentation and subject to change.
To comment on this topic, please send us email at ngwssdk@microsoft.com. Thanks!

Compiler Warning (level 1) C4270

nonstandard extension used: 'initializing': a non-const 'type1' must be initialized with an l-value, not a function returning 'type2'

A nonconst reference must be initialized with an l-value, making the reference a name for that l-value. A function call is an l-value only if the return type is a reference. Under Microsoft extensions to the C++ language, treat any function call as an l-value for the purpose of initializing references. If Microsoft extensions are disabled (/Za), an error occurs.

Example

struct X 
{
   X(int);
   X(X&);
};
X f(X);
X b = f(X(2));   // warning

To avoid this warning