[llvm-bugs] [Bug 46684] New: Constraints and explicit template instantiation

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46684

            Bug ID: 46684
           Summary: Constraints and explicit template instantiation
           Product: clang
           Version: 10.0
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++2a
          Assignee: unassignedclangbugs at nondot.org
          Reporter: kaba at hilvi.org
                CC: blitzrakete at gmail.com, erik.pilkington at gmail.com,
                    llvm-bugs at lists.llvm.org, richard-llvm at metafoo.co.uk

The following code does not compile in all of clang 10.0.0, gcc 10.1, and msvc
19.24:

    template <int N>
    struct A {
        void g() requires (N == 3) {}
        void f() requires (N == 3) { g(); }
    };

    template struct A<2>;

The error is "error : invalid reference to function 'g': constraints not
satisfied".

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