How to determine contents of data segment?

I compile most of my code at the command-line, and I'm writing a new
code base that, for reasons I can't determine, is stuffing a lot into
the data segment.  For example, compiling a "hello world"-type of
program will result in something like:

20 lines, 9.3 seconds, 4000 bytes code, 3000 bytes data.

It's the "3000 bytes data" part that is driving me nuts.  I've gone
over the code over and over again and I'm allocating nearly everything
on the heap (ie. no static VARs) so I honestly can't figure out what
the heck the compiler is stuffing into the data segment.

I tried pulling up the executable with embedded debug info into Turbo
Debugger and doing a View->Variables and looking through the list, but
I can't see anything obvious in there that would account for nearly
half of an empty program's size crammed into the data segment.  I've
generated a detailed .MAP but there's only a single line in there that
has DATA and it only tells me how large it is.

Is there some way to see what is taking up the data segment?