segfault on gc.impl.conservative.gc.Gcx.smallAlloc

[Vladimir Panteleev]

On Monday, 25 September 2017 at 21:34:40 UTC, Mengu wrote:
>     delete fileContents;

This looks suspicious - it is a slice of the memory-mapped file, 
not memory on the GC-managed heap, so "delete" is inapplicable to 
it. The GC ought to throw an exception when attempting to delete 
things not on the GC heap though.

I think the stack trace itself looks like something that should 
only happen when the GC's internal data structures are corrupted, 
so you may want to investigate in that direction.