[Issue 11230] Assertion failed: (type->ty != Tstruct || ((TypeStruct *)type)->sym == this), function semantic, file struct.c, line 876.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=11230


deadalnix <deadalnix at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |


--- Comment #2 from deadalnix <deadalnix at gmail.com> 2013-10-13 12:18:46 PDT ---
(In reply to comment #1)
> With the 2.064 beta:
> 
> test.d(14): Error: function test.visit has no return statement, but is expected
> to return a value of type test.C
> 
> which is correct.

You stopped yourself to the first line. Added a return statement so you won't : 

cat test.d

import std.algorithm;

class A {
    A[] as;
}

class B {
    A[] as;
}

class C : A {
}

C visit(A a) {
    a.as.map!(a => visit);
}

C visit(B b) {
    b.as.map!(a => visit);
}

C visit() {
    return null;
}


./dmd test.d 
test.d(15): Error: function test.visit has no return statement, but is expected
to return a value of type test.C
./../../phobos/std/algorithm.d(415): Error: struct
test.visit.MapResult!(__lambda2, A[]).MapResult failed semantic analysis
./../../phobos/std/algorithm.d(425): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(430): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(436): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(448): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(454): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(459): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(471): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(479): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(496): Error: this for _input needs to be type
MapResult not type MapResult!(__lambda2, A[])
./../../phobos/std/algorithm.d(411): Error: template instance
test.visit.MapResult!(__lambda2, A[]) error instantiating
test.d(20):        instantiated from here: map!(A[])
test.d(20): Error: template instance test.visit.map!((a) => visit).map!(A[])
error instantiating
test.d(19): Error: function test.visit has no return statement, but is expected
to return a value of type test.C

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