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Date: Wed, 9 Sep 2015 12:47:10 -0400
From: Zack Weinberg <>
To: Rich Felker <>
Cc:, GNU C Library <>,
Subject: Re: Compiler support for erasure of sensitive data

On Wed, Sep 9, 2015 at 12:42 PM, Rich Felker <> wrote:
> You're making this harder than it needs to be. The "m" constraint is
> the wrong thing to use here. Simply use:
>         __asm__(""::"r"(ptr):"memory");

Please review my earlier conversation with Adhemerval on exactly this point.


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