weak for Darwin

[Geoffrey Keating]

"Aaron W. LaFramboise" <aaronavay62@aaronwl.com> writes:

> > 	* libsupc++/new_op.cc (new): Make weak.

> The reason I'm asking is that I think this change will break non-ELF
> targets where weak symbols are translation-unit local (that is, weak
> symbols have meaning #2, but not meaning #1).  One such binary format is
> PECOFF, and I think there are others that have similar semantics.

Could you describe the nature of the breakage you'd expect?  I would
imagine such targets will quietly ignore the 'weak' (just like Darwin
does with weak_import), so that you can do

void foo(void) __attribute__((weak));

in a header, and then actually include that header when defining foo.