Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/constexpr-dynamic5.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// PR c++/88337 - Implement P1327R1: Allow dynamic_cast/typeid in constexpr. // { dg-do compile { target c++2a } } // Multiple levels. struct A { virtual void a(); }; struct B : A { virtual void b(); }; struct C : B { virtual void c(); }; struct D : C { virtual void d(); }; struct E : D { virtual void e(); }; struct F : E { virtual void f(); }; constexpr F f; // F->C->A->B == F->C->B static_assert (&dynamic_cast<B&>((A&)(C&)f) == &(B&)(C&)f); // F->A->E == F->E static_assert (&dynamic_cast<E&>((A&)f) == &(E&)f); // F->E->D->C->B->A->C == F->C static_assert (&dynamic_cast<C&>((A&)(B&)(C&)(D&)(E&)f) == &(C&)f); // F->B->F == F static_assert (&dynamic_cast<F&>((B&)f) == &f);