PATCH: Emit lifetime markers under -fsanitize=use-after-scope mode

[Alexey Samsonov]

+cc cfe-commits

On Mon, Apr 1, 2013 at 2:43 PM, Alexey Samsonov <samsonov at google.com> wrote:

> Hi!
>
> This patch adds a tiny bit to r177819: it turns on emitting lifetime
> markers for all auto variables under -fsanitize=use-after-scope mode. LLVM
> part of this mode is already implemented and adds calls to ASan runtime
> that mark the memory as addressable before llvm.lifetime.start() and
> "unaddressable" after llvm.lifetime.end().
>
> Also note that currently there is a problem with simplifycfg: it may kill
> llvm.lifetime.start intrinsics at the beginning of some basic blocks. Do
> you think it may harm you?
>
>

-- 
Alexey Samsonov, MSK
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