[Issue 14421] Variadic args array force on heap

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14421

--- Comment #2 from John Colvin <john.loughran.colvin at gmail.com> ---
What I want is a way of writing

char[] foo(char[] args ...)
{
    return args.dup;
}

with a guarantee that only one allocation is made.

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