tmp/tmpijz1gvi3/{from.md → to.md}
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### [[class]]: classes <a id="diff.cpp14.class">[[diff.cpp14.class]]</a>
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**Change:** Inheriting a constructor no longer injects a constructor
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into the derived class. **Rationale:** Better interaction with other
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language features. **Effect on original feature:** Valid C++14 code that
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uses inheriting constructors may not be valid or may have different
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semantics. A *using-declaration* that names a constructor now makes the
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corresponding base class constructors visible to initializations of the
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derived class rather than declaring additional derived class
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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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