Bug 205663 Clang getting Bus Errors (arm SCLTR Bit[12]==1 context): Reported fixed on llvm's trunk

[Warner Losh]

On Tue, Jan 5, 2016 at 11:27 AM, Mark Millard <markmi at dsl-only.net> wrote:

> llvm.org's Bugzilla reports that clang trunk has been fixed and clang 3.8
> will contain the fixes:
>
> James Molloy changed bug 25958
> What    Removed Added
> Status  NEW     RESOLVED
> Resolution      ---     FIXED
> Comment # 8 on bug 25958 from James Molloy
> Hi Mark,
>
> Thanks for your detailed investigation. I can confirm that this is fixed on
> trunk and therefore will be fixed for LLVM 3.8.
>
> The fixes were done for SPARC, which requires strict accesses much as ARM
> does
> with SCTLR=1.
>
> There was a sequence of commits by James Knight that fixed these, but an
> example is http://reviews.llvm.org/rL242554 .
>
> The fixes were in a similar vein to yours, but required changes in fewer
> places
> and there were a few more sticky issues to solve too. I'll CC James here in
> case he wants to comment on the current state of the clang codebase for
> self-hosting in a strict alignment environment.
>
> Cheers,
>
> James
>

There's a projects/clang-380-import that you might want to try...

Warner