Run from the command line.
/opt/developerstudio12.6/bin/dbx
…
Reading libjson-c.so.5.2.0
dbx: internal error: Unknown address size (0) in dwarf CU header.
% file /usr/lib/libjson-c.so.5.2.0
/usr/lib/libjson-c.so.5.2.0: ELF 32-bit MSB dynamic lib SPARC32PLUS Version 1, V8+ Required, dynamically linked, not stripped