[libcxx] r328245 - Use DoNotOptimize to prevent new/delete elision.

[Francois Pichet via cfe-commits]

Hi,

I am seeing failure on this test too.
    test\std\utilities\memory\default.allocator\allocator.
members\construct.pass.cpp

For the same reason : new optimized away.


On Thu, Mar 22, 2018 at 5:28 PM, Eric Fiselier via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> Author: ericwf
> Date: Thu Mar 22 14:28:09 2018
> New Revision: 328245
>
> URL: http://llvm.org/viewvc/llvm-project?rev=328245&view=rev
> Log:
> Use DoNotOptimize to prevent new/delete elision.
>
> The new/delete tests, in particular those which test replacement
> functions, often fail when the optimizer is enabled because the
> calls to new/delete may be optimized away, regardless of their
> side-effects.
>
> This patch converts the tests to use DoNotOptimize in order to prevent
> the elision.
>
>
>
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