struct _IO_FILE in generated .d file conflict with core.stdc.stdio._IO_FILE

[mw66]

Hi, I try to use

https://ta-lib.org/hdr_dw.html

http://prdownloads.sourceforge.net/ta-lib/ta-lib-0.4.0-src.tar.gz

$ cat source/talib.dpp 
#include "ta_libc.h"

~/.dub/packages/dpp-0.4.2/dpp/bin/d++ --preprocess-only --hard-fail --include-path=/home/linuxbrew/.linuxbrew/Cellar/ta-lib/0.4.0/include/ta-lib --keep-d-files --compiler=ldmd2  source/talib.dpp

The D compiler fails:

/project/ldc2-1.23.0-linux-x86_64/bin/../import/core/stdc/stdio.d(1317,8): Error: Function type does not match previously declared function with the same mangled name: fwrite
/project/ldc2-1.23.0-linux-x86_64/bin/../import/core/stdc/stdio.d(1317,8):        Previous IR type: i64 (i8*, i64, i64, %talib._IO_FILE*)
/project/ldc2-1.23.0-linux-x86_64/bin/../import/core/stdc/stdio.d(1317,8):        New IR type:      i64 (i8*, i64, i64, %core.stdc.stdio._IO_FILE*)

I manually edited the generated source/talib.d, by adding at the top:

public import core.stdc.stdio;

and comment out:

/*
    struct _IO_FILE { ... }
*/

Then it works.

I think this should be fixed by the dpp internally.

(BTW, I googled a bit, and found other people have this same problem too:

ldc-developers/ldc#2782 (comment)
)

[mw66]

BTW, in Ubuntu, you can setup the ta-lib by:

	sudo apt install linuxbrew-wrapper
	brew install ta-lib

[atilaneves]

ldc doesn't like mangled names that are repeated. A workaround is to use dmd.

[mw66]

I've thought the problem is not about mangled names, but about:

%talib._IO_FILE*  v.s.
%core.stdc.stdio._IO_FILE*

and in ldc-developers/ldc#2782 (comment)

%libxlsxd.xlsxwrap._IO_FILE*  v.s.
%core.stdc.stdio._IO_FILE*

i.e. the _IO_FILE become a symbol in the dpp file's package, instead of the standard: core.stdc.stdio._IO_FILE.

[mw66]

My manually modified generated file is here:

https://github.com/mingwugmail/talibd/blob/master/source/talib.d#L67

public import core.stdc.stdio;

...

version (DigitalMars) {
    struct _IO_FILE
    {...}
}

I think this is the only modification needed for it to work with LDC & DMD compilers, and struct _IO_FILE is the only offending struct we experienced. Maybe this can be specially handled in dpp so it will out out-of-box.

Thanks.

[Imperatorn]

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