Hi,
Sorry if my example code was incomplete. The code is actually from a
string class which was written in MSVC++. The string class has an
optimization to store small strings locally in the class without using
dynamic memory allocation for "string". If "this->string" has a valid
pointer, the union uses strLen, otherwise the union contains both the
string and the length (localStrLen).
I tried to name the struct and use the initialization like you
described in the previous reply, but g++ complains that you cannot use
such an initialization in a union. Should I just remove the union and
accept the extra 4 bytes for the strLen or can the compiler warnings be
fixed somehow?
class nString
{
public:
/// constructor
nString();
protected:
enum
{
LOCALSTRINGSIZE = 14,
};
char* string;
union
{
struct
{
char localString[LOCALSTRINGSIZE];
ushort localStrLen;
};
uint strLen;
};
};
//------------------------------------------------------------------------------
/**
*/
inline
nString::nString() :
string(0),
strLen(0),
localStrLen(0)
{
}
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