b04445d4a8
C++20 isn't final quite yet, but all that remains is formalities, so let's go ahead and change all the references. I think for the next C++ standard we can just call it C++23 rather than C++2b, since the committee has been consistent about time-based releases rather than feature-based. gcc/c-family/ChangeLog 2020-05-13 Jason Merrill <jason@redhat.com> * c.opt (std=c++20): Make c++2a the alias. (std=gnu++20): Likewise. * c-common.h (cxx_dialect): Change cxx2a to cxx20. * c-opts.c: Adjust. * c-cppbuiltin.c: Adjust. * c-ubsan.c: Adjust. * c-warn.c: Adjust. gcc/cp/ChangeLog 2020-05-13 Jason Merrill <jason@redhat.com> * call.c, class.c, constexpr.c, constraint.cc, decl.c, init.c, lambda.c, lex.c, method.c, name-lookup.c, parser.c, pt.c, tree.c, typeck2.c: Change cxx2a to cxx20. libcpp/ChangeLog 2020-05-13 Jason Merrill <jason@redhat.com> * include/cpplib.h (enum c_lang): Change CXX2A to CXX20. * init.c, lex.c: Adjust.
28 lines
666 B
C
28 lines
666 B
C
// PR c++/92695
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// { dg-do compile { target c++20 } }
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struct A {
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virtual int get () = 0;
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virtual int set (A *o) = 0;
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};
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struct B : A {
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constexpr int get () override { return 10; }
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constexpr int set (A *o) override { a = o; return 20; }
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A *a {};
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};
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constexpr auto addressof = [] (A &n) { return &n; };
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struct C {
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B b;
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A *c { addressof (b) };
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constexpr int add () { return c->set (addressof (b)); }
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};
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struct D {
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B b[2];
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A *c { addressof (b[0]) };
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constexpr int add () { return c->set (addressof (b[0])); }
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};
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template <typename T>
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constexpr int get () { T f; return f.add (); }
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static_assert (get<C> () == 20);
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static_assert (get<D> () == 20);
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