Unfortunately Kotlin Native doesn't have any tools that provide detailed information on a segmentation fault that occurs in a K/N program. Depending on the K/N target there may be a tool available to provide this information (in a very generic way) like valgrind ( https://valgrind.org/ ) with the Linux targets for example. Keep in mind that if valgrind is used it isn't user friendly, and doesn't officially support Kotlin (can easily end up with confusing information which makes no sense).

One primitive option (if available) to consider is to pepper the K/N program with println calls, which will at least indicate where the segfault occurs in the program.

Do note that the Kotlin team don't provide a guide on how to use valgrind with a K/N program to get detailed memory usage information.

nothing else

@Pavel Punegov [JB] - Does K/N provide an option for a K/N program to generate a dump file (to diagnose memory management issues)?

on linuxx64

with ktor client and cURL

I (think) it's happening upon exit from

main

Have you tried using libcurl ( https://curl.se/libcurl/ ) instead of Ktor Client, and seeing what happens?

This is for a quick and dirty project so I might have to revisit the use of ktor next week