On 04/01/2018 13:16, Andrew Haley wrote: > On 04/01/18 12:13, Christer Solskogen wrote: >> On 04.01.2018 12:18, David Brown wrote: >> >>> Start with >>> >>> -fsanitize=address >>> -fsanitize=undefined >> >> Adding -fsanitize=undefined gets rid of the segfault. Funny. >> But -fsanitize=address gave a lot of hints. >> Thanks! I think I have something to go with now! > > When you find it, I'm sure we'll be interested to know what ot was. Uninitialized pointer / pointer offset? Christer, can you post the warnings from the sanitizer? Regards.