[llvm-bugs] [Bug 49851] New: std::is_constant_evaluated() evaluated to false in concepts

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=49851

            Bug ID: 49851
           Summary: std::is_constant_evaluated() evaluated to false in
                    concepts
           Product: clang
           Version: 11.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++2a
          Assignee: unassignedclangbugs at nondot.org
          Reporter: hewillk at gmail.com
                CC: blitzrakete at gmail.com, erik.pilkington at gmail.com,
                    llvm-bugs at lists.llvm.org, richard-llvm at metafoo.co.uk

https://godbolt.org/z/hqK1vWMof

#include <type_traits>

template <typename T>
concept C = std::is_constant_evaluated();

static_assert(C<void>);

clang rejects it.

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