looking for a way to tell gcc not to remove some code he thinks is unreachable.

[Erez D]

On Mon, Mar 7, 2011 at 12:18 PM, Muli Ben-Yehuda <muli at il.ibm.com> wrote:

> On Mon, Mar 07, 2011 at 12:11:36PM +0200, Erez D wrote:
>
> > I have a function which is not called in a regular way, so gcc
> > thinks it is dead code.  however it is not, and i am looking for a
> > way to tell the linker not to remove it.
>
> extern
>
> how ?
sorry, didn't get what you mean.

i'll give an example:

=============== my code ========
int x;

void a()
{
  x=3;
}

int main()
{
  x=0;
  return 1;
}

========================

the linker will remove function a() as it is not called from enywhere.
however, i need it to be there, including all of its content.

how do i do that.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.cs.huji.ac.il/pipermail/linux-il/attachments/20110307/671ae3bd/attachment.html>