[swift-dev] Marking a function as __attribute__((weak))

[Philippe Hausler]

> On Mar 6, 2017, at 5:59 PM, Greg Parker <gparker at apple.com> wrote:
> 
> 
>> On Mar 6, 2017, at 5:48 PM, Philippe Hausler via swift-dev <swift-dev at swift.org> wrote:
>> 
>> Is there a way to mark a function in swift (on Linux) to use the same emission strategy as weak declarations in c? 
>> 
>> I was to tinkering with some ideas on fixing some poor behavior in swift-corelibs-foundation and weak would potentially solve this specific case.
>> 
>> For reference this is the syntax I am interested in (since it is a bit obscure) https://en.m.wikipedia.org/wiki/Weak_symbol
> 
> Weak definitions are expensive. What are you trying to do?
> 

I was trying to prototype some fixes for factory pattern initializers. The other strategy that I was considering was using hoisting of functions to init methods but that didn't seem to work with disparate types. This wasn't really intended to be a real solution but more so a proof of concept.

> 
> -- 
> Greg Parker     gparker at apple.com     Runtime Wrangler
> 
> 
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