tmp/tmp9i7m2feu/{from.md → to.md}
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### Clause [[special]]: special member functions <a id="diff.cpp14.special">[[diff.cpp14.special]]</a>
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[[class.inhctor.init]] **Change:** Inheriting a constructor no longer
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injects a constructor into the derived class. **Rationale:** Better
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interaction with other language features. **Effect on original
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feature:** Valid C++14code that uses inheriting constructors may not be
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valid or may have different semantics. A *using-declaration* that names
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a constructor now makes the corresponding base class constructors
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visible to initializations of the derived class rather than declaring
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additional derived class constructors.
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``` cpp
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struct A {
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template<typename T> A(T, typename T::type = 0);
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A(int);
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};
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struct B : A {
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using A::A;
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B(int);
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};
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B b(42L); // now calls B(int), used to call B<long>(long),
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// which called A(int) due to substitution failure
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// in A<long>(long).
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```
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