NetBSD 11.99.2
pkgin-23.8.1nb3     Apt / yum like tool for managing pkgsrc binary packages

think-c11$ pkgin search emacs
think-c11$ /usr/pkg/bin/pkgin search emacs
[1]   Segmentation fault (core dumped) ktrace /usr/pkg/bin/pkgin search emacs

think-c11$ gdb /usr/pkg/bin/pkgin pkgin.core

....
28444  28444 pkgin    CALL  sendto(4,0x7f7ffff01b40,0x8e,0,0,0)
28444  28444 pkgin    MISC  msghdr: [name=0x0, namelen=0, iov=0xffffc489675bff50, iovlen=1, 
       control=0x0, controllen=0, flags=0]
28444  28444 pkgin    GIO   fd 4 wrote 142 bytes
       "<15>1 - think-c11.ki.nu pkgin - - - assertion \"string != NULL\" failed: 
       file \"/usr/src/lib/libc/regex/engine.c\", line 225, function \"smatcher\"\n"