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Subject: [Bug 205663] clang++ 3.7.1 gets Bus Errors during compilation on arm
 that has SCTLR bit[1]==1 (alignment required)
Date: Tue, 05 Jan 2016 18:22:42 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D205663

--- Comment #6 from Mark Millard <markmi@dsl-only.net> ---
llvm.org's Bugzilla reports that clang trunk has been fixed and clang 3.8 w=
ill
contain the fixes:

James Molloy changed bug 25958=20
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 d=
oes
with SCTLR=3D1.

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 pl=
aces
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

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