On Sun, Oct 28, 2012 at 09:50:21PM +0100, Peter Dyballa wrote:
>
> Am 28.10.2012 um 20:05 schrieb Jack Howarth:
>
> > In particular there are linker bugs regarding weak undefined symbols which
> > aren't addresses until Xcode 4.4.1.
>
> Should this really play such a role? In the end the installed GCC 4.7 is
> compiled by GCC 4.7…
>
> --
> Greetings
>
> Pete
FYI, I just verified the scope of the breakage for radr://10466868. If you
consider the failing testcase for gcc.dg/torture/pr53922.c,
it fails to link even when passed '-undefined dynamic_lookup' on Xcode 4.2 of
SL (which unfortunately will never see an update)...
dyld: Symbol not found: _y
Referenced from: /Users/howarth/pr53922_failure/./pr53922.exe
Expected in: flat namespace
in /Users/howarth/pr53922_failure/./pr53922.exe
Trace/BPT trap
whereas the same linkage works fine under Xcode 4.5 and produces a fully
functional executable.
Jack
>
> Don't force it; get a larger hammer.
> – Anthony's Law of Force
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