HP C/aC++ for PA-RISC Software Base Template Class Reference Syntax Change, Tokens after #endif

CC:"DDB4325.C", line 3: error: T of type any redeclared as struct (1479)

This code compiles without error with HP aC++.

Base Template Class Reference Syntax Change

In HP C++, you can reference a member of a base template class without qualifying the member. In HP aC++, when you reference a member of a base template class, you must qualify the member by adding this->.

Adding this->defers name resolution until instantiation. This allows the compiler to find members in template base classes. However, it prevents the compiler from finding names declared in enclosing scopes.

Example:

template	class BaseT {
public:
T t;
int i;
};
template	class DerivedT : public BaseT {
public:
void foo1 () { t = 1; i = 1; }			//	warning 721
			//	t and i could be global.
void foo2 () { this->t = 2; this->i = 2; }			//	Correct syntax, no warning.
};
DerivedT d;		// Here is the point of instantiation.

Tokens after #endif

In HP C++, any character that follows the #endif preprocessor statement causes a warning and is ignored. In HP aC++, characters following the #endif preprocessor statement cause an error and the program does not compile. To change this, remove all characters following all #endif preprocessor statements or put the token in comments.

Example:

Compiling the following code with HP C++ causes a warning. Compiling with HP aC++ generates an error.

int main(){ #ifdef FLAG int i; i=1; #endif FLAG

}

To compile with HP aC++, change the code to:

int main(){ #ifdef FLAG int i; i=1;

#endif //FLAG

}

overload not a Keyword

In HP C++, using the overload keyword to specify a function as an overloaded function causes an anachronistic warning and is ignored. In HP aC++, using the overload keyword causes an error and the program does not compile. To change this, remove all occurrences of the overload keyword.

Example:

Migration Considerations Related to Standardization 213