I've just run into this problem too, in the sid_s390x-dchroot on zelenka, same as Thibaut.
I found that a work-around is to allow dumping of a core file, which gdb will then happily analyse. Florian -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org