On Thursday, 21 October 2021 at 22:23:50 UTC, data pulverizer
wrote:
Hi,
I'm getting an odd issue with ImportC when I import a header
converted with `gcc -E -P ...` some of the types signatures in
functions don't come through with their proper names but as
`__tagXX` where `XX` is some number. It's got to the point
where the type itself might get imported correctly, but the
same type in a function might be `__tag28` or some other
mangled name so when I create an instance of the proper type
and try to call the respective function, I get a type error.
I'd first check that the type names look OK in the processed C.
If they do, then it's an importc bug. Those are still getting
reported, but yours might be new. Worth checking out.
It might also be a bug that's been fixed since release--try dmd
master on it. These were fixed a few days ago:
fix Issue 22404 - importC: Error: cannot pass argument 'ENUMMEM'
of type 'int' to parameter '__tag2
fix Issue 22402 - importC: Error: can't subtract '__tag2[1]' from
pointer
Also, with some definitions in the C file, when I try to
`#undef` something to get some conditional C definitions to be
converted with `gcc -E -P ...`, nothing happens.
d doesn't do any C preprocessing, so any problem here is with
gcc. Your `#undef`s may be coming before the C preprocessor's own
`#define`s and have no effect.
Thanks.
