[llvm-bugs] [Bug 40039] New: Confusing error message when function pointer return type is not defined

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40039

            Bug ID: 40039
           Summary: Confusing error message when function pointer return
                    type is not defined
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: yshuiv7 at gmail.com
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

Code:

    int (*func)(int *); // <- this is a normal function

    // this is a function that returns a function type,
    // which is totally fine
    int (*(*funcx)(int *))(int *);

    //typedef struct asd asdf; // <- code compiles with this line, as expected

    // what is clang complaining about?
    asdf (*func2)(int *);

For the last line, clang complains about:

    error: function cannot return function type 'int (int *)'

Which makes no sense to me.

Compiler explorer link: https://godbolt.org/z/dUf9t4

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