core.stdc and betterC

[Patrick Schluter]

On Sunday, 29 April 2018 at 15:40:20 UTC, Jacob Carlborg wrote:
> On 2018-04-29 16:42, dd886k wrote:
>> [...]
>
> Looks like "putchar" is inlined [1]. That means the "putchar" 
> you're referencing is not the one in the C standard library but 
> it's implemented in druntime. That means you need to link with 
> druntime/phobos, it's not enough to link with the C standard 
> library.
>
> I don't know why it was done this way. Perhaps it's just a 
> macro on some platforms.
>
> [1] 
> https://github.com/dlang/druntime/blob/master/src/core/stdc/stdio.d#L1289

Yes, putchar is often implemented as a the macro

     #define putchar(x) putc(x, stdout)