Whilst packaging version 20141225, I have created a -dbg debug package. I can confirm that the crash still occurs, and attach a full backtrace.
Cheers, Ross
#0 rawmemchr () at ../sysdeps/x86_64/rawmemchr.S:37
No locals.
#1 0x00007f1b257278f2 in _IO_str_init_static_internal (
sf=sf@entry=0x7fff7cf57b40, ptr=ptr@entry=0x0, size=size@entry=0,
pstart=pstart@entry=0x0) at strops.c:44
fp = 0x7fff7cf57b40
end = <optimized out>
#2 0x00007f1b25718067 in __GI___isoc99_vsscanf (string=0x0,
format=0x4196f7 "%lf", args=args@entry=0x7fff7cf57c68)
at isoc99_vsscanf.c:41
ret = 631580512
sf = {_sbf = {_f = {_flags = -72515584, _IO_read_ptr = 0x0,
_IO_read_end = 0x0, _IO_read_base = 0x0, _IO_write_base = 0x0,
_IO_write_ptr = 0x0, _IO_write_end = 0x0, _IO_buf_base = 0x0,
_IO_buf_end = 0x0, _IO_save_base = 0x0, _IO_backup_base = 0x0,
_IO_save_end = 0x0, _markers = 0x0, _chain = 0x0,
_fileno = 2096462984, _flags2 = 0,
_old_offset = 139754572487772, _cur_column = 0,
_vtable_offset = 0 '\000', _shortbuf = "", _lock = 0x0,
_offset = 0, _codecvt = 0x7f1b25c7b500,
_wide_data = 0xffffffffffffffff, _freeres_list = 0x0,
_freeres_buf = 0x4be73120, _freeres_size = 4195946, _mode = -1,
_unused2 =
"\000\000\000\000\300\204\307%\033\177\000\000xVk%\033\177\000"}, vtable =
0x7f1b25a52760 <_IO_str_jumps>}, _s = {
_allocate_buffer = 0x7fff7cf57d30, _free_buffer = 0x7f1b25c7b740}}
#3 0x00007f1b25718007 in __isoc99_sscanf (s=<optimized out>,
format=format@entry=0x4196f7 "%lf") at isoc99_sscanf.c:31
arg = {{gp_offset = 16, fp_offset = 48,
overflow_arg_area = 0x7fff7cf57d40,
reg_save_area = 0x7fff7cf57c80}}
done = 631580512
#4 0x000000000040d86e in setscaling (s=<optimized out>) at drawtune.c:422
f = -1
#5 0x0000000000406e07 in event_init (argc=argc@entry=4, argv=0x7fff7cf57e88,
filename=filename@entry=0x7fff7cf57d90) at yapstree.c:1131
place = <optimized out>
filearg = <optimized out>
refmatch = <optimized out>
papsize = <optimized out>
margins = <optimized out>
newscale = <optimized out>
ier = <optimized out>
j = <optimized out>
#6 0x0000000000400edc in main (argc=4, argv=<optimized out>)
at yapstree.c:2980
filename = 0x7fff7cf57e80 "\004"
i = <optimized out>
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