Bug 16137 – Better error message: function literal accessing class variable

This code ``` class A { int i; void foo() { auto a = function() { i++; }; // Line 6 } } ``` gives the error (DMD 2.071): foo.d(6): Error: need 'this' for 'i' of type 'int' I think it should be improved, but I do not have a great idea for it. It think instead of mentioning "need 'this'" it should mention something about "delegate" or "function literal needs access to object data", ... Thanks, Johan

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/dmd/issues/19142 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB