dmd v2.109.1: static foreach over tuple: segfault

[dlangBugzillaToGithub]

kdevel reported this on 2024-11-23T00:38:27Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=24873

CC List

• Nick Treleaven

Description

crash.d:
```
import std;

void main ()
{
   auto tup = tuple!(string, string, string);
   static foreach (j, t; tup)
   {
   }
}
```
$ dmd crash.d 
Segmentation fault
$ dmd --version
DMD64 D Compiler v2.109.1
Copyright (C) 1999-2024 by The D Language Foundation, All Rights Reserved written by Walter Bright

[dlangBugzillaToGithub]

nick commented on 2024-11-23T13:24:22Z

Reduced:

struct Tuple(T...)
{
    T fields;
    alias fields this;
}

void main ()
{
   Tuple!(string) tup;
   static foreach (j, t; tup)
   {
   }
}