• berni (4/11) Feb 19 2017 The call of bar.foo() is, where the segmentation fault occurs.
• rikki cattermole (6/18) Feb 19 2017 void main()
• berni (13/43) Feb 19 2017 Oops. I overdid when trying to create a small example. With the
• ag0aep6g (3/15) Feb 19 2017 Looks like a bug, yes. Please report on . For...

berni <berni example.com> writes:

I get a segmentation fault, when I run this program:

void main()
{
    A bar = cast(A)Object.factory("AA");
    bar.foo();
}

class A    { abstract void foo(); }
class AA:A { override void foo() {} }

The call of bar.foo() is, where the segmentation fault occurs. 
When I use A bar = new AA(); instead of the factory it works.

What's wrong here?

rikki cattermole <rikki cattermole.co.nz> writes:

On 19/02/2017 11:06 PM, berni wrote:
 I get a segmentation fault, when I run this program:

 void main()
 {
    A bar = cast(A)Object.factory("AA");
    bar.foo();
 }

 class A    { abstract void foo(); }
 class AA:A { override void foo() {} }

 The call of bar.foo() is, where the segmentation fault occurs. When I
 use A bar = new AA(); instead of the factory it works.

 What's wrong here?

void main()
{
    A bar = cast(A)Object.factory(__MODULE__ ~ ".AA");
    bar.foo();
}

berni <berni example.com> writes:

On Sunday, 19 February 2017 at 10:15:49 UTC, rikki cattermole 
wrote:
 What's wrong here?

 void main()
 {
    A bar = cast(A)Object.factory(__MODULE__ ~ ".AA");
    bar.foo();
 }

Oops. I overdid when trying to create a small example. With the 
module it works, but my original program had the module and still 
produced an segmentation fault. After some more investigations I 
found out, that it was not due to a mistake in the program, but 
because rdmd didn't recompile after I called it with an 
--extra-file added. Looks like a bug in rdmd... Here is a small 
example:

test.d:

module test;

import std.stdio;

void main()
{
    B tmp = cast(B)Object.factory("test2.BB");
    tmp.m1();
}

interface A   { abstract void m1(); }
interface B:A { abstract void m2(); }
class AA:A    { override void m1() { writeln("A"); } }

test2.d:

module test2;

import std.stdio;
import test;

class BB:AA,B { override void m2() { writeln("B"); } }

And here is what I get when compiling:

$> rdmd test.d
segmentation fault
$> rdmd --extra-file=test2.d test.d
segmentation fault
$> rm -rf /tmp/.rdmd-1000/
$> rdmd --extra-file=test2.d test.d
A
$> rdmd -version
rdmd build 20170122
[...]

Should I report this bug anywhere (or am I wrong again?)

ag0aep6g <anonymous example.com> writes:

On 02/19/2017 12:13 PM, berni wrote:
 And here is what I get when compiling:

 $> rdmd test.d
 segmentation fault
 $> rdmd --extra-file=test2.d test.d
 segmentation fault
 $> rm -rf /tmp/.rdmd-1000/
 $> rdmd --extra-file=test2.d test.d
 A
 $> rdmd -version
 rdmd build 20170122
 [...]

 Should I report this bug anywhere (or am I wrong again?)

Looks like a bug, yes. Please report on <https://issues.dlang.org/>. For 
"component" choose "tools".