I have a very simple function, that will just return the value of a QVariant. It's a part of a class to return the value of the private QVariant data:
template <typename T>
QVariantReference<T>::operator T() const
{
return this->data.value<T>();
}
If I compile with the MSVC2013-compiler, it just works fine, but if I try to do this with MinGW, i get the following error:
C:\C++Libraries\Qt\workplace\QXmlDataSaver\QXmlDataSaver\qxmldatasaver.h:34: Fehler: expected primary-expression before '>' token
return this->data.value<T>();
I already checked the QVariant-Documentation but there is no hint about compilers regarding this function. I can call QVariant::value<T>() in non-template-functions without any problems.
Anyone an idea what the reason could be? Or is this normal behavior for MinGW? Thanks for your help.
You have to tell the compiler value is a member template. It does not by default assume that it is, and instead parses the first < as the less-than operator. MSVC actually disregards that rule and isn't standard conforming.
template <typename T>
QVariantReference<T>::operator T() const
{
return this->data.template value<T>();
}