In my XEmacs which spends most of its time running Gnus, I just got this failure: (gdb) r Starting program: /usr/local/bin/xemacs-21.2-b8 -geometry 207x89+1282+0 -f gnus-init Program received signal SIGSEGV, Segmentation fault. 0x808198c in marked_p (obj=153503600) at alloc.c:4117 4117 return PURIFIED (lheader) || MARKED_RECORD_HEADER_P (lheader); (gdb) bt #0 0x808198c in marked_p (obj=153503600) at alloc.c:4117 #1 0x80a5539 in finish_marking_weak_hash_tables ( obj_marked_p=0x8081970 <marked_p>, markobj=0x807eca4 <mark_object>) at elhash.c:1178 #2 0x80803f7 in garbage_collect_1 () at alloc.c:4477 #3 0x80ac439 in Ffuncall (nargs=3, args=0xbfffe80c) at eval.c:3135 #4 0x80882f8 in execute_optimized_program ( ... (gdb) list 4112 { 4113 struct lrecord_header *lheader = XRECORD_LHEADER (obj); 4114 #if defined (ERROR_CHECK_GC) && defined (USE_INDEXED_LRECORD_IMPLEMENTATION) 4115 assert (lheader->type <= last_lrecord_type_index_assigned); 4116 #endif 4117 return PURIFIED (lheader) || MARKED_RECORD_HEADER_P (lheader); 4118 } 4119 #ifndef LRECORD_STRING 4120 case Lisp_Type_String: 4121 { (gdb) p lheader No symbol "lheader" in current context. (gdb) p obj $13 = -1 (gdb) up #1 0x80a5539 in finish_marking_weak_hash_tables ( obj_marked_p=0x8081970 <marked_p>, markobj=0x807eca4 <mark_object>) at elhash.c:1178 1178 if (obj_marked_p (e->value)) (gdb) list 1173 break; 1174 1175 case HASH_TABLE_VALUE_WEAK: 1176 for (; e < sentinel; e++) 1177 if (!HENTRY_CLEAR_P (e)) 1178 if (obj_marked_p (e->value)) 1179 MARK_OBJ (e->key); 1180 break; 1181 1182 case HASH_TABLE_KEY_CAR_WEAK: (gdb) p e $14 = (hentry *) 0x82df958 (gdb) p e->value $15 = 153503600 uname -a: Linux beaver.jprc.com 2.1.131 #5 SMP Thu Dec 17 16:46:02 EST 1998 i686 unknown ./configure '--with-pop' '--with-mule' '--with-png' '--error-checking=none' '--debug=no' XEmacs 21.2-b8 "Artemis" configured for `i686-pc-linux'. Where should the build process find the source code? /home/karl/src/x/xemacs-21/xemacs-21.2.8 What installation prefix should install use? /usr/local What operating system and machine description files should XEmacs use? `s/linux.h' and `m/intel386.h' What compiler should XEmacs be built with? gcc -g -O3 -Wall -Wno-switch Should XEmacs use the GNU version of malloc? yes (Using Doug Lea's new malloc from the GNU C Library.) Should XEmacs use the relocating allocator for buffers? yes What window system should XEmacs use? x11 Where do we find X Windows header files? /usr/X11/include Where do we find X Windows libraries? /usr/X11/lib Compiling in support for XAUTH. Compiling in support for XPM images. Compiling in support for PNG image handling. Compiling in support for (builtin) GIF image handling. Compiling in support for JPEG image handling. Compiling in support for TIFF image handling. Compiling in support for X-Face message headers. Compiling in native sound support. Compiling in support for Berkeley DB. Compiling in support for GNU DBM. Compiling in support for ncurses. Compiling in support for GPM (General Purpose Mouse). Compiling in Mule (multi-lingual) support. Compiling in XIM (X11R5+ I18N input method) support. Using raw Xlib to provide XIM support. Compiling in support for proper session-management. Using Lucid menubars. Using Lucid scrollbars. Using Athena dialog boxes. Compiling in DLL support. movemail will use "dot-locking" for locking mail spool files. Using POP for mail access. Using Lisp_Objects with minimal tagbits.