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As mentioned in the PR, we only support due to a bug in constant expressions std::construct_at on non-automatic variables, because we VERIFY_CONSTANT the second argument of placement new, which fails verification if it is an address of an automatic variable. The following patch fixes it by not performing that verification, the placement new evaluation later on will verify it after it is dereferenced. 2020-10-01 Jakub Jelinek <jakub@redhat.com> PR c++/97195 * constexpr.c (cxx_eval_call_expression): Don't VERIFY_CONSTANT the second argument. * g++.dg/cpp2a/constexpr-new14.C: New test. |
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