On Monday, 7 November 2016 at 17:12:32 UTC, Alex wrote: > dmd -c -of./app.o -debug -g -gc -O -profile -w ./app.d -vcolumns > dmd -of./app ./app.o -g -gc Knowing this, I tried to find the option which does the difference. This was the profile option. So, if I omit it, the segmentation fault is gone...