| description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||
|---|---|---|---|---|---|---|---|
Learn more about: Compiler Warning (level 1) C4812 |
Compiler Warning (level 1) C4812 |
11/04/2016 |
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a7f5721f-2019-44de-ad62-ed30bac8b1f3 |
obsolete declaration style: please use 'new_syntax' instead
In the current release of Visual C++, the explicit constructor specialization is still supported, but it may not be supported in a future release.
The following sample generates C4812:
// C4812.cpp
// compile with: /W1 /c
template <class T>
class MyClass;
template<class T>
class MyClass<T*> {
MyClass();
};
template<class T>
MyClass<T*>::MyClass<T*>() {} // C4812
// try the following line instead
// MyClass<T*>::MyClass() {}