ImportC and .h files

[bachmeier]

On Wednesday, 11 January 2023 at 02:59:49 UTC, Walter Bright 
wrote:
> Many have mentioned on the n.g. that ImportC wasn't working 
> with this or that .h file. So I've been looking at bugzilla for 
> issues pertaining to that.
>
> Pretty much they are contributions from Jacob Carlborg. I'm 
> halfway through fixing those.
>
> But what about yours? I can't fix non-specific things like 
> "doesn't work with h files". Help me help you by filing 
> bugzilla issues! Please tag them with the "ImportC" keyword.

This one filed by Adam blocks most large C programs from 
compiling: https://issues.dlang.org/show_bug.cgi?id=23402

A single function definition or enum imported in two places 
within the same program prevents compilation.