Various operators will give or take away the L-value status of the resulting expression.  The following table summarizes how L-value status changes:

Operator	Description	Result
[ ]	Array/Pointer indexed dereference	Gain
.	Structure object member selector	Gain
->	Pointer-to-Structure member selector	Gain
debugmsg	Output text to log	Loss
sizeof	Size of expression	Loss
new	Memory buffer allocation	Loss
newchild	Child memory buffer allocation	Loss
getparent	Get pointer to parent node	Loss
getnext	Get pointer to next node	Loss
getprevious	Get pointer to previous node	Loss
getchild	Get pointer to child node	Loss
getsize	Get byte size of node	Loss
getbitsize	Get bit size of node	Loss
getuid	Get construct UID of node	Loss
getname	Get construct name of node	Loss
getuidfromname	Get construct UID when given name	Loss
getchildcount	Get child count of node	Loss
getrelpos	Get relative position of node	Loss
gethlevel	Get hierarchy level of node	Loss
getnodetype	Get node type of node	Loss
(all mathematical unary operators)	(various)	Loss
(all mathematical binary operators)	(various)	Loss
++	Prefix increment	Loss
--	Prefix decrement	Loss
~	Bitwise NOT	Loss
!	Logical NOT	Loss
-	Negate	Loss
*	Pointer dereference	Gain
&	Address-of	Loss
(type)	Typecast	Loss
*	Multiply	Loss
/	Divide	Loss
%	Modulo	Loss
+	Add	Loss
-	Subtract	Loss
<<	Shift left	Loss
>>	Shift right	Loss
>=	Relational greater than or equal to	Loss
<=	Relational less than or equal to	Loss
>	Relational greater than	Loss
<	Relational less than	Loss
==	Relational equal to	Loss
!=	Relational not equal to	Loss
&	Bitwise AND	Loss
^	Bitwise XOR	Loss
|	Bitwise OR	Loss
&&	Logical AND	Loss
||	Logical OR	Loss
=	Assignment	Loss
+=	Addition assignment	Loss
-=	Subtraction assignment	Loss
*=	Multiplication assignment	Loss
/=	Division assignment	Loss
%=	Modulo assignment	Loss
&=	Bitwise AND assignment	Loss
^=	Bitwise XOR assignment	Loss
|=	Bitwise OR assignment	Loss
<<=	Shift left assignment	Loss
>>=	Shift right assignment	Loss
,	Argument separator	Loss
(function)	Return from function call	Loss

  See also:  [Final expression type result] [L-value status gain and loss]
[Overly complex expressions] [Limitations on pointer usage] [Structure member dereference:  bit scan blocks]