Bug 9052 – [2.061 alpha] AA.length in a const context tries to call opAssign + no error line number

The following code fails (in length()) because aa.length internally tries to call Json.opAssign. There are also no line numbers in the error message. Happens beginning with the first 2.061 alpha release (or one of the first). Related to http://d.puremagic.com/issues/show_bug.cgi?id=9031 --- struct Json { Json[string] aa; void opAssign(Json) {} size_t length() const { return aa.length; } } --- Error: function json.Json.opAssign (Json _param_0) is not callable using argument types (const(Json)) const Error: cannot implicitly convert expression (p.value) of type const(Json) to Json