• Exil (20/20) May 29 2019 Am I missing something or should this be able to compile? I don't
• rikki cattermole (1/1) May 29 2019 Bug report please. That shouldn't be happening.
• Jacob Carlborg (7/33) May 30 2019 Looks like there are two issues here:
• Timon Gehr (3/37) May 30 2019 The only issue here is that `@nogc:` applies to all nested functions,
• Jacob Carlborg (5/7) Jun 04 2019 You don't see it has a problem that the compiler mentions "delegate" in
• Timon Gehr (2/10) Jun 05 2019 The problem is that there is an error message at all.
• Dennis (2/3) May 30 2019 It's a known bug: https://issues.dlang.org/show_bug.cgi?id=18439
• Nicholas Wilson (2/5) May 30 2019 Fixed in https://github.com/dlang/dmd/pull/9922
• Timon Gehr (2/9) Jun 05 2019 Disgusting.

Exil <Exil gmall.com> writes:

Am I missing something or should this be able to compile? I don't 
know where it is even using ~=, is it used internally for ranges?

struct T
{
 nogc:

auto opBinary(string op, V)(auto ref const(V) vec) const
{
     // Error: cannot use operator ~= in  nogc delegate 
onlineapp.T.opBinary!("+", T).opBinary.__lambda2
     static foreach(i ; 0 .. 1)
     {
     }
     return this;
}
}

void main() {
     T a, b;
     T c = a + b;
}


https://run.dlang.io/is/JDXcJj

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

Bug report please. That shouldn't be happening.

Jacob Carlborg <doob me.com> writes:

On 2019-05-30 04:56, Exil wrote:
 
 Am I missing something or should this be able to compile? I don't know 
 where it is even using ~=, is it used internally for ranges?
 
 struct T
 {
  nogc:
 
 auto opBinary(string op, V)(auto ref const(V) vec) const
 {
      // Error: cannot use operator ~= in  nogc delegate 
 onlineapp.T.opBinary!("+", T).opBinary.__lambda2
      static foreach(i ; 0 .. 1)
      {
      }
      return this;
 }
 }
 
 void main() {
      T a, b;
      T c = a + b;
 }
 
 
 https://run.dlang.io/is/JDXcJj

Looks like there are two issues here:

1. That "static foreach" cannot be used in a  nogc function
2. That the error message mentions "delegate", which are not in the 
source code

-- 
/Jacob Carlborg

Timon Gehr <timon.gehr gmx.ch> writes:

On 30.05.19 17:02, Jacob Carlborg wrote:
 On 2019-05-30 04:56, Exil wrote:
 Am I missing something or should this be able to compile? I don't know 
 where it is even using ~=, is it used internally for ranges?

 struct T
 {
  nogc:

 auto opBinary(string op, V)(auto ref const(V) vec) const
 {
      // Error: cannot use operator ~= in  nogc delegate 
 onlineapp.T.opBinary!("+", T).opBinary.__lambda2
      static foreach(i ; 0 .. 1)
      {
      }
      return this;
 }
 }

 void main() {
      T a, b;
      T c = a + b;
 }


 https://run.dlang.io/is/JDXcJj

 
 Looks like there are two issues here:
 
 1. That "static foreach" cannot be used in a  nogc function
 2. That the error message mentions "delegate", which are not in the 
 source code
 

The only issue here is that ` nogc:` applies to all nested functions, 
including delegates that are only used for CTFE.

Jacob Carlborg <doob me.com> writes:

On 2019-05-30 17:29, Timon Gehr wrote:

 The only issue here is that ` nogc:` applies to all nested functions, 
 including delegates that are only used for CTFE.

You don't see it has a problem that the compiler mentions "delegate" in 
an error message but "delegate" doesn't exist in the source code?

-- 
/Jacob Carlborg

Timon Gehr <timon.gehr gmx.ch> writes:

On 04.06.19 19:58, Jacob Carlborg wrote:
 On 2019-05-30 17:29, Timon Gehr wrote:
 
 The only issue here is that ` nogc:` applies to all nested functions, 
 including delegates that are only used for CTFE.

 
 You don't see it has a problem that the compiler mentions "delegate" in 
 an error message but "delegate" doesn't exist in the source code?
 

The problem is that there is an error message at all.

Dennis <dkorpel gmail.com> writes:

On Thursday, 30 May 2019 at 02:56:16 UTC, Exil wrote:
 Am I missing something or should this be able to compile?

It's a known bug: https://issues.dlang.org/show_bug.cgi?id=18439

Nicholas Wilson <iamthewilsonator hotmail.com> writes:

On Thursday, 30 May 2019 at 15:11:31 UTC, Dennis wrote:
 On Thursday, 30 May 2019 at 02:56:16 UTC, Exil wrote:
 Am I missing something or should this be able to compile?

 It's a known bug: https://issues.dlang.org/show_bug.cgi?id=18439

Fixed in https://github.com/dlang/dmd/pull/9922

Timon Gehr <timon.gehr gmx.ch> writes:

On 31.05.19 05:40, Nicholas Wilson wrote:
 On Thursday, 30 May 2019 at 15:11:31 UTC, Dennis wrote:
 On Thursday, 30 May 2019 at 02:56:16 UTC, Exil wrote:
 Am I missing something or should this be able to compile?

 It's a known bug: https://issues.dlang.org/show_bug.cgi?id=18439

 
 Fixed in https://github.com/dlang/dmd/pull/9922

Disgusting.