Bug 21107 – Cannot define an r/w property inside a function

It wonders me that the following program does not compile: void main() { @property int x() { return 0; } @property void x(int) { } } x.d(3): Error: declaration x is already defined Is it a DMD v2.090.1 bug? If it should not be compilable indeed, it is nevertheless a bug: The error message should be more clear.

*** This issue has been marked as a duplicate of issue 12578 ***

This was marked duplicate as a duplicate of issue 12578. But I suggest to fix this issue (namely with property functions) independently on whether 12578 will be fixed. This issue can be fixed even is 12578 cannot or hard to fix (in the general case), because property functions are not "in fact" overloaded (in the call syntax).

There is nothing special about @property functions in terms of overload resolution - they use the exact same code as other functions. For instance, this is perfectly valid: @property int fun() { return 0; } @property int fun(int value) { return 1; } @property int fun(string value) { return 2; } unittest { auto a = fun; fun = 13; fun = "twenty-seven"; } Fixing this issue for @property functions only will require duplicating code, complicating the compiler. It will also require fixing the exact issue in 12578, and then choosing not to apply the fix to other functions. An argument could be made that the error message could be better. At least, it could be made to match the error message for same-name globals: int i; string i; // variable foo.i conflicts with variable foo.i at foo.d(1)