barcode CLI crashes on start unless /etc/papersize exists

[C H]

strace -fo/tmp/a barcode -b testing -o out.txt
Segmentation fault (core dumped)

tail -n 3 /tmp/a
19294 stat("/etc/papersize", 0x7fff4f346390) = -1 ENOENT (No such file or directory)
19294 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
19294 +++ killed by SIGSEGV (core dumped) +++

ls -l /etc/papersize
ls: cannot access '/etc/papersize': No such file or directory

echo letter | sudo tee /etc/papersize

strace -fo/tmp/a barcode -b testing -o out.txt

The barcode program crashes without an error unless /etc/papersize is present. This may be the fault of libpaper, because it doesn't crash if you specify the paper size with -p.