On 5/6/2025 8:34 AM, Timon Gehr wrote: > - There are `assert(0)` in druntime. > - Druntime/Phobos ship as `-release` build. > > Therefore, setting the assert handler will do nothing, even if you configure > checkaction to call it in your own project. Change the `-release` in building druntime to `-release -checkaction=D`.