Re: segmentation fault in Fcons

[Richard Stallman]

    Program received signal SIGSEGV, Segmentation fault.
    Fcons (car=675344400, cdr=-1456900304) at alloc.c:2350
    2350          cons_free_list = *(struct Lisp_Cons **)&cons_free_list->cdr;
    (gdb) p cons_free_list
    $1 = (struct Lisp_Cons *) 0x2840f010

It must be that cons_free_list was clobbered in the past.
Perhaps a block in that list had its cdr clobbered, and then
was allocated, bringing the garbage value out of the cdr into
cons_free_list itself.