Large-Address awareness on 64 bit systems

[Yaakov (Cygwin/X)]

On Mon, 2011-06-27 at 21:52 -0500, Yaakov (Cygwin/X) wrote:
> I have also been getting SIGABRT from throwing exceptions
> across C++ DLLs, with GDB pointing to RtlUpdateClonedSRWLock() in ntdll,
> but I was seeing that sometimes before this as well.  (This is with
> 1.7.9; recent snapshots haven't been working for me but I haven't had
> the time to track down why.)

I've managed to narrow this down somewhat.  With Ports' gcc-4.5.3 built
with binutils-2.21, libstdc++6 and libgcj11 break wrt throwing
exceptions if rebased *above* their natural ImageBases (IOW the ones
they were created with at link time), but not if rebased to a lower
address.

Purely speculation at this point, but I have to wonder if this is
somehow left over from a previous problem with libstdc++6, where it
completely broke if rebased at all:

http://sourceware.org/ml/binutils/2009-12/msg00080.html

Otherwise, so far so good.


Yaakov