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List:       pcc-list
Subject:    Re: feature request: __attribute__((weak))
From:       Iain Hibbert <plunky () rya-online ! net>
Date:       2011-07-29 10:51:47
Message-ID: alpine.NEB.2.00.1107291147440.14145 () galant ! ukfsn ! org
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On Thu, 28 Jul 2011, Szabolcs Nagy wrote:

> attribute weak is only supported with alias
> with the following code
>
> static void f() {}
> void g() __attribute__((weak, alias("f")));
> void h() __attribute((weak));
> static void *p = h;
>
>
> nm t.o prints
>
> 00000000 t f
> 00000000 W g
>          U h
> 00000000 d p
>
> with gcc nm t.o prints
>
> 00000000 t f
> 00000000 W g
>          w h
> 00000000 d p
>
> (linux, elf objects, i386, not stripped)
>
> it may worth supporting the plain weak attribute
> if it's not too much extra effort

there is a Jira issue about weak reference support, which I guess needs to
be researched a bit more fully as there are several types

  http://pcc.ludd.ltu.se/jira/browse/PCC-362

feel free to add comments there..

iain
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