checking for sig_atomic_t in signal.h... yes
checking size of char... Segmentation fault (core dumped)
configure: error: in `/usr/obj/usr/ports/shells/bash/work/bash-4.4':
configure: error: cannot compute sizeof (char)
See `config.log' for more details
===> Script "configure" failed unexpectedly.
Default version is ok, system is self hosted, other ports recompiled fine.
Confirmed. I'm trying to isolate the change in base  that caused the break.
Thank you for prompt reply :)
For now, I've just added
I've just tried compiling it on a recent version of 12-STABLE (r342806) and whatever caused the issue seems to be gone. I can't reproduce the compiler error anymore. Can you confirm?
Confirmed on FreeBSD 12.0-STABLE #0 r342683. Thanks!