Complicated dg test cases

[Dan Kegel]

Janis Johnson <janis187@us.ibm.com> wrote:
> Several months ago, or maybe more than a year ago, I submitted a patch
> for the binary compatibility tests in gcc.dg/compat and g++dg/compat to
> builds pieces of a test into shared objects and static archives as well
> as relocatable object files.  It wasn't reviewed and I got sidetracked.
> There are lots of problems that could be discovered with tests like
> that.  ...  http://gcc.gnu.org/ml/gcc-patches/2002-10/msg01332.html.

While preparing to try this, I noticed that the existing compat
patches seem to have an undefined exit status.  This is bad, isn't it?
Unless I'm confused, we should add a 'return 0;' to the end of g++.dg/compat/*/*_main.C, e.g.

--- gcc-3.3.2/gcc/testsuite/g++.dg/compat/abi/bitfield1_main.C.old      Mon Feb  9 03:10:11 2004
+++ gcc-3.3.2/gcc/testsuite/g++.dg/compat/abi/bitfield1_main.C  Mon Feb  9 03:10:49 2004
@@ -10,4 +10,5 @@
  main ()
  {
    bitfield1_x ();
+  return 0;
  }

I haven't seen these fail because of the missing return, but maybe that's just luck.
- Dan