Re: gcc 3.4 regression in gdb.cp/namespace.exp

[David Carlton <carlton at kealia dot com>]

On Mon, 15 Mar 2004 21:39:21 -0500 (EST), mec.gnu@mindspring.com
(Michael Elizabeth Chastain) said:

> David Carlton writes:
>   ptype CClass::NestedClass
>   There is no field named NestedClass
>   (gdb) FAIL: gdb.cp/namespace.exp: ptype CClass::NestedClass

> This has been working fine for me with gdb HEAD, suite HEAD, gcc HEAD,
> -gdwarf-2 since 2004-01-23.  I got some FAILs on 2004-01-18 and
> 2004-01-19.

Hmm.  Well, I'm checking out gcc-3_4-branch as we speak, so we'll see
how it goes.  (And at some point I'll update my mainline GCC, too.)
As Daniel says, this may be a very recent bug in GDB, so you may not
have seen it.  (Or it may be that the GCC I'm using is generating
valid DWARF-2 which happens to be different from the current GCC
snapshot, for that matter.)

>> I really hate the way we test our DWARF 2 reader - there's no way
>> to generate the debug info by hand to give a particular scenario,
>> so instead we have to hope that we can find the magic version of
>> GCC and magic way of writing a test case to trigger the bug in
>> question.  Sigh.

> Can we write a gdb.dwarf-2 that looks like gdb.stabs, with assembly
> language input in it?

That's a good idea; I'll think about that.

David Carlton
carlton@kealia.com