Is it bug compiler?

[MGW via Digitalmars-d-learn]

Windows 7 32bit
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import std.stdio;
import std.conv;

class CFormaMain {
  	~this() {
		char[] zz = [ 'A', 'B', 'C' ];
		writeln(to!string(zz));
	}
}

int main(string[] args) {
  	CFormaMain formaMain;
	formaMain = new CFormaMain();
	return 0;
}
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core.exception.InvalidMemoryOperationError at src\core\exception.d(693): Invalid me
mory operation