Struct constructors callable twice?

Guilherme Vieira n2.nitrogen at
Wed Jan 12 03:34:17 PST 2011

I've found this behavior while toying with opCall() in a struct:

import std.stdio;
struct Struct
    this(int value) { writeln("Struct.this(", value, ")"); }
    ~this() { writeln("Struct.~this()"); }
void main()
    Struct s = Struct(1); // prints `Struct.this(1)`
    s(2);                 // prints `Struct.this(2)`

    s(3);                 // prints `Struct.this(3)`

}                         // prints `Struct.~this()`

Notice how the destructor is only called once. If there was an opCall
defined for Struct, its reconstruction would shadow it. It certainly looks
like a bug to me, but since I'm "sure of nothing" in D I decided to post it
here. Is it really a bug?

Atenciosamente / Sincerely,
Guilherme ("n2liquid") Vieira
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