Bug 3163 – Never referenced local variable compiles without error.

Per Paragraph 2, "Local Variables" in "Functions" DMD 2.0, it is an error to declare a local variable that is never referred to. But this compiles and runs fine: --- code import std.stdio; void main(){ int i = 10; //never referred to -- should be error ? int k; writefln("%d", i + 3); } --- terminal ex$> /opt/dmd2/linux/bin/dmd2 Digital Mars D Compiler v2.029 Copyright (c) 1999-2009 by Digital Mars written by Walter Bright Documentation: http://www.digitalmars.com/d/2.0/index.html ex$> /opt/dmd2/linux/bin/dmd2 func.d ex$> ./func 13

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*** This issue has been marked as a duplicate of issue 3960 ***