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gdb vs. gcc. was: IA32 bootstrap error
Richard Henderson wrote:
> On Sun, Dec 30, 2001 at 04:55:51PM -0600, Robert Lipe wrote:
> > My results weren't nearly as positive. Should I start chasing GDB problems
> > or GCC problems?
> > fancy_abort (file=warning: Cannot convert floating-point register
> > value to non-floating-point type.
> Dunno. The symptom resembles a register numbering mismatch between
> gcc and gdb. It's possible that the debug info is screwed up enough
> that gdb is actually reading garbage though.
It's GDB. It spews that warning and generally fails to cope with output
from four different compilers emitting a mixture of dwarf-1 and dwarf-2.
But the other debuggers I tried weren't happy with the current GCC
input, either. (Of course, they may also share the producer/consumer
codependence I mentioned earlier...)
But the GDB of today behaves substantially worse in all combinations
than gdb 20000204 so we've at least narrowed the search domain down to a
specific 30Mb tree of source. Joy. :-(