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.
27 lines
710 B
C
27 lines
710 B
C
// PR c++/91364 - Implement P0388R4: Permit conversions to arrays of unknown bound.
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// { dg-do run { target c++20 } }
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// Ranking of reference initialization conversions
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int f(int(&)[]) { return 1; } // (1)
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int f(int(&)[1]) { return 2; } // (2)
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int h(int(*)[]) { return 1; } // (a)
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int h(int(*)[1]) { return 2; } // (b)
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// From P0388R4:
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// (2) and (b) should clearly be better than (1) and (a), respectively,
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// as the former overloads are more restricted.
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// (a) should be worse than (b), which is implied by (a) necessitating
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// a qualification conversion in that case.
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int
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main ()
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{
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int arr[1];
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if (f(arr) != 2)
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__builtin_abort ();
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if (h(&arr) != 2)
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__builtin_abort ();
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}
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