On 08/17/2016 06:20 PM, Manuel López-Ibáñez wrote:
> On 17/08/16 18:19, Zack Weinberg wrote:
>> anything I would like to hear about it.  If anyone has any ideas for
>> how to write a test that will start failing if a compiler ever learns
>> to "see through" __glibc_read_memory, I would like to hear about that,
>> too.  (I can imagine a way to do it with gcc's scan-assembler tests,
>> but we don't have those here.)
> 
> Perhaps? https://plus.google.com/+MatthewDempsky/posts/KQHFBouxurX

Ingenious!  Done - patch 5/4 attached to this message, and also included
in zack/explicit-bzero.  I would fold this into patch 2 for landing, but
it may be easier to review this way.

(What is the preferred way to deal with user-namespace project branches
that get rebased?  The server won't let me push -f; I can delete the
branch and recreate it but that seems ... not great.)

zw