DBX & SDB: global variables

[Michael Ellis]

Has anyone ever figured out how to make ANY UN*X source-level debugger
print global variables? No syntax I've tried will convince either
4.1 sdb or 4.2 dbx that my globals really exist.

All I can get either of the debuggers to print are local variables in the
currently active procedure(s). 

Help!

-michael

*UNIX is the Official Operating System of the 1984 Olympics