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Language Lawyer has asked 7 questions and find answers to 44 problems.

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Language Lawyer questions

Non-overloadable non-inline function definitions in different translation units
Shall a pointer past the end of the last array element compare equal to a pointer past the end of the whole array?
Which union member becomes active after placement new
Why is `is_destructible` defined using `declval<U&>().~U()` and not `declval<U>().~U()`?

Language Lawyer answers

Construct an empty object without the default constructor
what is the meaning of the phrase "preceding initialization" in section [expr.const]
Are pointers to allocated memory outside object's lifetime "invalid pointer[s]" or "pointer[s] to an object"?
What justifies the lvalue category of unevaluated non-static data members in C++?
Why lambda expression's capture list cannot be decomposed using structured bindings
Why is the copy constructor not trivial just because there is a user defined destructor? [duplicate]
Member access control for friend function defined inside class in C++
What are the name lookup and type simplification rules for trailing return types?
Is it a defect when the base class is a dependent type
Does std::thread::join guarantee writes visibility