llvm dev - Jan 2017 - WEAK ALIASES ON DARWIN

Hi,
I am working updating the code in compiler-rt. I would be really grateful
if someone could clarify if weak aliases are supported on Darwin. For
example:
As a pragma:

 void fun_def(){}
 #pragma weak fun = fun_def

Or as an attribute:

 void fun_def(){}
 void fun () __attribute__ ((weak, alias ("fun_def")));

Thanks,
Marcos
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20170117/2d2b2e1a/attachment.html>