[LLVM] Uninitialized member in copy constructor in DataLayout.h

[David Blaikie]

On Tue, Feb 26, 2013 at 7:15 PM, Peng Cheng <gm4cheng at gmail.com> wrote:
> The copy constructor of class DataLayout fails to initialize
> StackNaturalAlign.  It could lead to conditional jump on uninitialized
> variables in member function exceedsNaturalStackAlignment.

Does this fail any valgrind bots? Could you write a test case that
would fail under valgrind?

> See fix in the patch attached.
>
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