[LLVMdev] Unable to build PBQP/Graph.h with libc++

[Lang Hames]

This is a known issue with the current PBQP data structures. I'm working on
an overhaul of the PBQP allocator at the moment which should address this.

- Lang.

On Sat, Oct 20, 2012 at 2:08 PM, Benjamin Kramer <benny.kra at gmail.com>wrote:

>
> On 20.10.2012, at 22:47, Jordan Rose <jordan_rose at apple.com> wrote:
>
> > Hi, everyone. Today I was trying to build LLVM with libc++ and C++11
> enabled, and I ran into this:
> >
> >
> http://stackoverflow.com/questions/10065384/instantiation-of-a-list-with-an-incomplete-type-in-a-typedef
> >
> > Basically, PBQP/Graph.h forward-declares classes, then tries to get
> iterators for std::lists of those classes. This is technically undefined
> behavior. I tried fudging with the order of declarations for a while, but
> gave up after realizing there's not an easy way out.
> >
> > Is anyone else building LLVMCodeGen with libc++ and C++11? Is anyone
> else seeing this?
>
> I was hitting this problem a while ago, but it's not reproducible when
> compiling llvm with clang trunk and libc++ trunk.
>
> - Ben
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