From: Ravi Ramaseshan <ramaseshan.ravi@gmail.com>
To: "Øyvind Harboe" <oyvind.harboe@zylin.com>
Cc: binutils@sources.redhat.com
Subject: Re: Referenced symbol not present in final image?
Date: Fri, 08 Apr 2005 12:23:00 -0000 [thread overview]
Message-ID: <22080b0a05040805236f1d6206@mail.gmail.com> (raw)
In-Reply-To: <1112956254.23080.30.camel@localhost.localdomain>
On Apr 8, 2005 4:00 PM, Øyvind Harboe <oyvind.harboe@zylin.com> wrote:
> Using binutils 2.15:
>
> Under what circumstances would the linker allow a symbol to be
> referenced but not defined?
If you define a symbol as weak and do not provide a definition for the
same (as in the example below) then the linker would allow the symbol
to be undefined but still referenced in the binary.
<snip>
#include<stdio.h>
void foo() __attribute__ ((weak));
int main()
{
int c;
if(!c)
foo();
return 0;
}
</snip>
Regards,
Ravi Ramaseshan.
PS: Please correct me if I am wrong. Sorry for the incomplete reply I
sent earlier.
--
" All man's miseries derive from not being able to sit in a room alone. "
- Blaise Pascal
next prev parent reply other threads:[~2005-04-08 12:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-08 10:30 Øyvind Harboe
2005-04-08 12:23 ` Ravi Ramaseshan [this message]
2005-04-08 11:14 Øyvind Harboe
2005-04-08 12:17 ` Dave Korn
2005-04-08 12:31 ` Øyvind Harboe
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