• Daniel Kozak (36/36) Oct 18 2016 Try to compile this:
• wobbles (6/42) Oct 18 2016 Compiler bug?
• wobbles (53/107) Oct 18 2016 With -v on, this is what it prints:
• Andrei Alexandrescu (7/12) Oct 18 2016 If I add:
• Daniel Kozak via Digitalmars-d (3/16) Oct 18 2016 https://issues.dlang.org/show_bug.cgi?id=16621

Daniel Kozak <kozzi11 gmail.com> writes:

Try to compile this:

import std.stdio;

auto xxx(T)()
{
      return this;
}

struct S
{
     mixin xxx!(typeof(this));
     alias xxx this;
}

void foo(S pos)
{
     writefln("(%.2f|%.2f)", pos.x, pos.y);
}

void main()
{
}


Or this:

import std.stdio;

auto xxx(T)()
if (is(T == struct))
{
      return this;
}

struct Vector2f
{
     mixin xxx!(typeof(this));
     alias xxx this;
}

void foo(ref const Vector2f pos) {}

void main()
{
     Vector2f v;
     foo(v);
}

wobbles <grogan.colin gmail.com> writes:

On Tuesday, 18 October 2016 at 08:21:09 UTC, Daniel Kozak wrote:
 Try to compile this:

 import std.stdio;

 auto xxx(T)()
 {
      return this;
 }

 struct S
 {
     mixin xxx!(typeof(this));
     alias xxx this;
 }

 void foo(S pos)
 {
     writefln("(%.2f|%.2f)", pos.x, pos.y);
 }

 void main()
 {
 }


 Or this:

 import std.stdio;

 auto xxx(T)()
 if (is(T == struct))
 {
      return this;
 }

 struct Vector2f
 {
     mixin xxx!(typeof(this));
     alias xxx this;
 }

 void foo(ref const Vector2f pos) {}

 void main()
 {
     Vector2f v;
     foo(v);
 }

Compiler bug?

Looks like it's constantly going in circles trying to figure out 
what the hell 'xxx' is :)
I cancelled compilation after a minute of 100% CPU usage so not 
sure if it will ever finish.

wobbles <grogan.colin gmail.com> writes:

On Tuesday, 18 October 2016 at 11:06:08 UTC, wobbles wrote:
 On Tuesday, 18 October 2016 at 08:21:09 UTC, Daniel Kozak wrote:
 Try to compile this:

 import std.stdio;

 auto xxx(T)()
 {
      return this;
 }

 struct S
 {
     mixin xxx!(typeof(this));
     alias xxx this;
 }

 void foo(S pos)
 {
     writefln("(%.2f|%.2f)", pos.x, pos.y);
 }

 void main()
 {
 }


 Or this:

 import std.stdio;

 auto xxx(T)()
 if (is(T == struct))
 {
      return this;
 }

 struct Vector2f
 {
     mixin xxx!(typeof(this));
     alias xxx this;
 }

 void foo(ref const Vector2f pos) {}

 void main()
 {
     Vector2f v;
     foo(v);
 }

 Compiler bug?

 Looks like it's constantly going in circles trying to figure 
 out what the hell 'xxx' is :)
 I cancelled compilation after a minute of 100% CPU usage so not 
 sure if it will ever finish.

With -v on, this is what it prints:
dmd compileFun.d -v
binary    dmd
version   v2.071.0
config    /usr/local/bin/dmd.conf
parse     compileFun
importall compileFun
import    object        
(/Library/D/dmd/src/druntime/import/object.d)
import    core.attribute        
(/Library/D/dmd/src/druntime/import/core/attribute.d)
import    std.stdio     (/Library/D/dmd/src/phobos/std/stdio.d)
import    core.stdc.stdio       
(/Library/D/dmd/src/druntime/import/core/stdc/stdio.d)
import    core.stdc.stdint      
(/Library/D/dmd/src/druntime/import/core/stdc/stdint.d)
import    core.stdc.stddef      
(/Library/D/dmd/src/druntime/import/core/stdc/stddef.d)
import    core.stdc.signal      
(/Library/D/dmd/src/druntime/import/core/stdc/signal.d)
import    core.stdc.wchar_      
(/Library/D/dmd/src/druntime/import/core/stdc/wchar_.d)
import    core.stdc.config      
(/Library/D/dmd/src/druntime/import/core/stdc/config.d)
import    core.stdc.stdarg      
(/Library/D/dmd/src/druntime/import/core/stdc/stdarg.d)
import    core.stdc.stdlib      
(/Library/D/dmd/src/druntime/import/core/stdc/stdlib.d)
import    core.stdc.time        
(/Library/D/dmd/src/druntime/import/core/stdc/time.d)
import    core.sys.posix.sys.types      
(/Library/D/dmd/src/druntime/import/core/sys/posix/sys/types.d)
import    core.sys.posix.config 
(/Library/D/dmd/src/druntime/import/core/sys/posix/config.d)
import    std.typecons  (/Library/D/dmd/src/phobos/std/typecons.d)
import    std.meta      (/Library/D/dmd/src/phobos/std/meta.d)
import    std.traits    (/Library/D/dmd/src/phobos/std/traits.d)
import    std.typetuple 
(/Library/D/dmd/src/phobos/std/typetuple.d)
import    std.stdiobase 
(/Library/D/dmd/src/phobos/std/stdiobase.d)
import    std.range.primitives  
(/Library/D/dmd/src/phobos/std/range/primitives.d)
semantic  compileFun
import    core.stdc.errno       
(/Library/D/dmd/src/druntime/import/core/stdc/errno.d)
import    core.stdc.string      
(/Library/D/dmd/src/druntime/import/core/stdc/string.d)
entry     main          compileFun.d
semantic2 compileFun
semantic3 compileFun


And sticsk on semantic3 forever.

Andrei Alexandrescu <SeeWebsiteForEmail erdani.org> writes:

On 10/18/16 7:06 AM, wobbles wrote:
 Compiler bug?

 Looks like it's constantly going in circles trying to figure out what
 the hell 'xxx' is :)
 I cancelled compilation after a minute of 100% CPU usage so not sure if
 it will ever finish.

If I add:

alias byRef this;

to Namespace's example either in Vector2f or ByRef, I get the same 
behavior. Daniel, could you please submit all three examples in an issue?

Thanks,

Andrei

Daniel Kozak via Digitalmars-d <digitalmars-d puremagic.com> writes:

Dne 18.10.2016 v 13:36 Andrei Alexandrescu via Digitalmars-d napsal(a):

 On 10/18/16 7:06 AM, wobbles wrote:
 Compiler bug?

 Looks like it's constantly going in circles trying to figure out what
 the hell 'xxx' is :)
 I cancelled compilation after a minute of 100% CPU usage so not sure if
 it will ever finish.

 If I add:

 alias byRef this;

 to Namespace's example either in Vector2f or ByRef, I get the same 
 behavior. Daniel, could you please submit all three examples in an issue?

 Thanks,

 Andrei

https://issues.dlang.org/show_bug.cgi?id=16621

It is based on Namespace's example, soi I belive it is same error