The issue occurs in a similar way it did with VS 2010. I am using VS 2012 RTM, C++ project, using PlatformToolset v100.
I was editing source code when the crash popup came up:
Unhandled exception at 0x3d731716 (cpfe.dll) in vcpkgsrv.exe: 0xC0000005: Access violation reading location 0x464646c1.
Call stack of the failing process is quoted below and I have minidump saved.
> cpfe.dll!edge::intellisense_operation::get_auto_complete_members() + 1014 bytes Unknown
[Frames below may be incorrect and/or missing, no symbols loaded for cpfe.dll]
cpfe.dll!edge::scoped_query_manager::get_trees_overlapping_span() + 5043 bytes Unknown
rpcrt4.dll!NdrServerInitialize() + 576 bytes Unknown
rpcrt4.dll!NdrStubCall2() + 598 bytes Unknown