Re: forcing a variable to be on the stack

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To: Mathieu Lacage <mathieu.lacage@xxxxxxxxx>
Subject: Re: forcing a variable to be on the stack
From: Andrew Haley <aph@xxxxxxxxxx>
Date: Wed, 06 Oct 2010 16:20:52 +0100
Cc: gcc-help <gcc-help@xxxxxxxxxxx>
In-reply-to: <AANLkTim8b2MVctMiBZ6ZesrStvF5Pr24e9omkJXOdM7p@xxxxxxxxxxxxxx>
References: <AANLkTim8b2MVctMiBZ6ZesrStvF5Pr24e9omkJXOdM7p@xxxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-4.fc12 Thunderbird/3.0

On 10/06/2010 04:11 PM, Mathieu Lacage wrote:
> Is there a way to ask gcc to force a specific variable to be stored on
> the stack ?

Take its address.

> (other than write a bit of inline asm ?)

Nothing wrong with that:

 asm volatile ("" ::"a"&foo);

Andrew.

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- forcing a variable to be on the stack
  - From: Mathieu Lacage

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