Re: CVS commit: src/lib/librumphijack

["Valeriy E. Ushakov" <uwe%stderr.spb.ru@localhost>]

On Thu, Mar 10, 2011 at 23:02:56 +0000, Antti Kantee wrote:

> Use rumphijack_dlsym() to figure out where __sysctl() is during
> init.  Otherwise powerpc dlsym() DTWT and returns NULL.
> (now i have no idea why dlsym() it works from rcinit(), but i'll
> opt to not care)

I don't remember if I brought this up here already, but I strongly
suspect suspect that libexec/ld.elf_so/rtld.c

revision 1.121
date: 2008/09/27 03:52:05;  author: macallan;  state: Exp;  lines: +15 -3
avoid usind __builtin_return_address(0) on PowerPC because it fails in
Xorg's module loader.
Should fix PR37812

broke it (hi, Mac!).  IIRC, it tries to work around dlsym in tail call
position (badness!) and "fixes" it only by chance, causing grief
elsewhere.

-uwe