On Saturday, 4 November 2023 at 13:51:20 UTC, Dadoum wrote:
On Saturday, 4 November 2023 at 13:45:56 UTC, Emmanuel Danso
Nyarko wrote:
[...]
There is a syntax disagreement here that's why the D compiler
is instantly stopping you from doing any symbol generated
interaction with string in C++ interop. C++ doesn't know
'string' and C++ mangles with parameters and so passing string
will make string get involved with the symbol generation and
since string(std::string) in C++ is a template library, the D
compiler stops you from engaging with 'string'
I don't think it's related to the existence of std::string at
all since all dynamic array types are forbidden.
```d
extern (C++) void hello(ubyte[] arg) {
import std.stdio;
writeln(arg);
}
```
also fails to compile while this works:
```d
extern (C) void hello(ubyte[] arg) {
import std.stdio;
writeln(arg);
}
```
Here too you will get the same error, cannot be mapped to C++.
C++ mangles dynamic arrays as pointer arrays(uses the 'P'
symbol), which is supported by D for interfacing with C. Another
disagreement here using it in c++ interop. Hence will not
compile. Once again, I think the compiler team will be the best
to give you what you're looking for.
