[Issue 21623] New: pragma(crt_constructor) should accept function declarations

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21623

          Issue ID: 21623
           Summary: pragma(crt_constructor) should accept function
                    declarations
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: bugzilla at digitalmars.com

Consider:

    extern (C)
    pragma(crt_constructor) void foo();

This code silently compiles, but does nothing, while:

    extern (C)
    pragma(crt_constructor) void foo() { }

compiles and calls foo() on startup.

There is no reason the former should not work, and to silently do nothing at
minimum is a bug.

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