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

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=9052

           Summary: [2.061 alpha] AA.length in a const context tries to
                    call opAssign + no error line number
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: regression
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: sludwig at outerproduct.org


--- Comment #0 from Sönke Ludwig <sludwig at outerproduct.org> 2012-11-21 07:31:55 PST ---
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

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