Martin Buchholz <martin(a)xemacs.org&gt; writes: I knew you would say that. :-) Yes that's my best guess at the moment as well, especially since Raymond's backtraces seem to indicate that one element in the catchlist is corrupted and involve Fthrow (and just about every other non-trivial function in XEmacs). Maybe we (and especially Raymond) can try running with the following (untested) patch. Any backtraces might give new hints. --- eval.c Wed Mar 15 20:55:26 2000 +++ eval.c-check Wed Mar 15 21:47:02 2000 ＠＠ -4667,7 +4667,6 ＠＠ Fset (specpdl_ptr->symbol, specpdl_ptr->old_value); } -#if 0 /* martin */ #ifndef EXCEEDINGLY_QUESTIONABLE_CODE /* There should never be anything here for us to remove. If so, it indicates a logic error in Emacs. Catches ＠＠ -4682,9 +4681,9 ＠＠ while (catchlist && catchlist->pdlcount > specpdl_depth_counter) { + assert(0); catchlist = catchlist->next; /* Don't mess with gcprolist, backtrace_list here */ } -#endif #endif } if (quitf)