tracking "next" failure?

[Andrew Cagney]

> How in the world do you go about finding out why:
> 
>    Breakpoint 1, main () at .../testsuite/gdb.base/all-types.c:35
>    35          dummy();
>    (gdb) next
> 
>    Program exited normally.
>    (gdb) FAIL: gdb.base/all-bin.exp: continuing after dummy()
> 
> loses control of the application?  I'm getting completely lost.
> 
> I suspect that this is responsible for the bulk of the gdb test
> failures on alpha at the moment.

Set a breakpoint on *_saved_pc_after_call, and then use nexti.

The loss of control is likely from a dud return address (used for 
setting the return breakpoint) being computed when the the code is first 
stepped into dummy().  The other is (hmm, alpha) something going wrong 
with software single step?

Andrew