[llvm] r229352 - IR: Properly return nullptr when getAggregateElement is out-of-bounds

[Hans Wennborg]

On Sun, Feb 15, 2015 at 8:02 PM, David Majnemer
<david.majnemer at gmail.com> wrote:
> Author: majnemer
> Date: Sun Feb 15 22:02:09 2015
> New Revision: 229352
>
> URL: http://llvm.org/viewvc/llvm-project?rev=229352&view=rev
> Log:
> IR: Properly return nullptr when getAggregateElement is out-of-bounds
>
> We didn't properly handle the out-of-bounds case for
> ConstantAggregateZero and UndefValue.  This would manifest as a crash
> when the constant folder was asked to fold a load of a constant global
> whose struct type has no operands.
>
> This fixes PR22595.

Björn suggested we should merge this to 3.6. David, do you think this
would be ok?