Is this all correct?


static import core.stdc.stdio;
static import std.stdio;
void main() {
    std.stdio.fprintf(core.stdc.stdio.stderr, "Error\n"); // OK
    std.stdio.fprintf(std.stdio.stderr, "Error\n"); // line 5, error
}

The latest DMD gives:

test.d(5): Error: function core.stdc.stdio.fprintf (shared(_iobuf)* stream, in const(char*) format,...) is not callable using argument types (File,string)
test.d(5): Error: cannot implicitly convert expression (stderr) of type File to shared(_iobuf)*

Bye,
bearophile

On Fri, 19 Aug 2011 10:12:11 -0400, bearophile <bearophileHUGS@lycos.com> wrote:

> Is this all correct?
>
>
> static import core.stdc.stdio;
> static import std.stdio;
> void main() {
>     std.stdio.fprintf(core.stdc.stdio.stderr, "Error\n"); // OK
>     std.stdio.fprintf(std.stdio.stderr, "Error\n"); // line 5, error
> }
>
> The latest DMD gives:
>
> test.d(5): Error: function core.stdc.stdio.fprintf (shared(_iobuf)* stream, in const(char*) format,...) is not callable using argument types (File,string)
> test.d(5): Error: cannot implicitly convert expression (stderr) of type File to shared(_iobuf)*

Yes, std.stdio.stderr is a D File struct, whereas core.stdc.stdio.stderr is a C FILE * opaque type.

-Steve

On 8/19/11 4:12 PM, bearophile wrote:
> static import core.stdc.stdio;
> static import std.stdio;
> void main() {
>      std.stdio.fprintf(core.stdc.stdio.stderr, "Error\n"); // OK
>      std.stdio.fprintf(std.stdio.stderr, "Error\n"); // line 5, error
> }

std.stdio.stderr is a wrapper around core.stdc.stdio.stderr (a D File), you can use std.stdio.stderr.getFP() to get the C FILE pointer from it.

David