I had a very similar problem with version 1.2.5-4 in potato (segfault when adding a `From:' line), which is indeed alpha-specific and is due to a gcc bug. Recompiling compose.c with -O1 helps. An alternative solution would be to change type of idxlen and idxmax in mutt_compose_menu() from short to int (why the hell are they declared short, anyway?).
I've put a healthy potato mutt_1.2.5-4 (with a few other broken potato packages) at ftp://genie.ucd.ie/pub/alpha/debian-potato/ . How can we incorporate this mutt in potato-updates? Does the source version have to go up in order to allow mutt_1.2.5-4potato1 or something like this in potato?

