Seeing this issue on 2.069.2 using etc.c.zlib.

C:\d\dmd2\windows\bin\..\lib\phobos.lib(gzlib)
 Error 42: Symbol Undefined __lseeki64

The code was compiling in 2.067.  Not clear on where to look to fix this issue.

On Wednesday, 16 December 2015 at 17:23:15 UTC, Byron Heads wrote:
> Seeing this issue on 2.069.2 using etc.c.zlib.
>
> C:\d\dmd2\windows\bin\..\lib\phobos.lib(gzlib)
>  Error 42: Symbol Undefined __lseeki64
>
> The code was compiling in 2.067.  Not clear on where to look to fix this issue.

I can reproduce with this code...
Windows dmd 2.069.2 32bit


import std.stream;
import std.exception;

// todo: add bzip support..
class GZipBufferedFile : BufferedFile {

private:
    GZipFile gZipFile;
    /**
     * GZipFile stream, safly opens and closes a gzip file, also will correctly read from the zip file
     */
    class GZipFile : File {
      import std.c.stdio;
      import etc.c.zlib;

      FILE* fp;
      gzFile fpGZip;

      /**
       * Use gzopen to open the zip file
       */
      this(string filename) {
        fp = fopen(filename.toStringz, "rb");
        enforce(fp !is null, "Failed to open file '%s'".format(filename));

        version(Windows) {
          fpGZip = gzdopen(fp._file, "rb");
          super(fpGZip, FileMode.In);
        } else {
          fpGZip = gzdopen(fileno(fp), "rb");
          super(cast(int)fpGZip, FileMode.In);
        }
        seekable = true;

        // Still not supported... sigh
        //gzbuffer(fpGZip, 1024 * 1024);
      }


      ulong tell() {
        fflush(fp);
        return ftell(fp);
      }

      /**
       * read data block with gzread
       */
      override size_t readBlock(void* buffer, size_t size) {
          assertReadable();

          size = gzread(fpGZip, buffer, cast(uint)size);
          if (size == -1) {
              size = 0;
          }

          // use gzeof to test for end of file
          readEOF = fpGZip.gzeof != 0;
          return size;
      }

      /**
       * make sure we close with gzclose
       */
      override void close() {
        gzclose(fpGZip);
        fpGZip = null;
        fp = null;
      }
  }

public:
  this(string filename) {
    gZipFile = new GZipFile(filename);
    super(gZipFile);
  }

  ulong tell() {
    return gZipFile.tell;
  }
}


void main() {

}

On Wednesday, 16 December 2015 at 18:14:35 UTC, Byron Heads wrote:
> On Wednesday, 16 December 2015 at 17:23:15 UTC, Byron Heads wrote:
>> Seeing this issue on 2.069.2 using etc.c.zlib.
>>
>> C:\d\dmd2\windows\bin\..\lib\phobos.lib(gzlib)
>>  Error 42: Symbol Undefined __lseeki64
>>
>> The code was compiling in 2.067.  Not clear on where to look to fix this issue.
>
> I can reproduce with this code...
> Windows dmd 2.069.2 32bit
>
>
> import std.stream;
> import std.exception;
>
> // todo: add bzip support..
> class GZipBufferedFile : BufferedFile {
>
> private:
>     GZipFile gZipFile;
>     /**
>      * GZipFile stream, safly opens and closes a gzip file, also will correctly read from the zip file
>      */
>     class GZipFile : File {
>       import std.c.stdio;
>       import etc.c.zlib;
>
>       FILE* fp;
>       gzFile fpGZip;
>
>       /**
>        * Use gzopen to open the zip file
>        */
>       this(string filename) {
>         fp = fopen(filename.toStringz, "rb");
>         enforce(fp !is null, "Failed to open file '%s'".format(filename));
>
>         version(Windows) {
>           fpGZip = gzdopen(fp._file, "rb");
>           super(fpGZip, FileMode.In);
>         } else {
>           fpGZip = gzdopen(fileno(fp), "rb");
>           super(cast(int)fpGZip, FileMode.In);
>         }
>         seekable = true;
>
>         // Still not supported... sigh
>         //gzbuffer(fpGZip, 1024 * 1024);
>       }
>
>
>       ulong tell() {
>         fflush(fp);
>         return ftell(fp);
>       }
>
>       /**
>        * read data block with gzread
>        */
>       override size_t readBlock(void* buffer, size_t size) {
>           assertReadable();
>
>           size = gzread(fpGZip, buffer, cast(uint)size);
>           if (size == -1) {
>               size = 0;
>           }
>
>           // use gzeof to test for end of file
>           readEOF = fpGZip.gzeof != 0;
>           return size;
>       }
>
>       /**
>        * make sure we close with gzclose
>        */
>       override void close() {
>         gzclose(fpGZip);
>         fpGZip = null;
>         fp = null;
>       }
>   }
>
> public:
>   this(string filename) {
>     gZipFile = new GZipFile(filename);
>     super(gZipFile);
>   }
>
>   ulong tell() {
>     return gZipFile.tell;
>   }
> }
>
>
> void main() {
>
> }


Commenting out

gzclose(fpGZip);

allows it to compile..

On Wednesday, 16 December 2015 at 18:21:33 UTC, Byron Heads wrote:
> On Wednesday, 16 December 2015 at 18:14:35 UTC, Byron Heads wrote:
>> On Wednesday, 16 December 2015 at 17:23:15 UTC, Byron Heads wrote:
>>> Seeing this issue on 2.069.2 using etc.c.zlib.
>>>
>>> C:\d\dmd2\windows\bin\..\lib\phobos.lib(gzlib)
>>>  Error 42: Symbol Undefined __lseeki64
>>>
>>> The code was compiling in 2.067.  Not clear on where to look to fix this issue.
>>
>> I can reproduce with this code...
>> Windows dmd 2.069.2 32bit
>>
>>
>> import std.stream;
>> import std.exception;
>>
>> // todo: add bzip support..
>> class GZipBufferedFile : BufferedFile {
>>
>> private:
>>     GZipFile gZipFile;
>>     /**
>>      * GZipFile stream, safly opens and closes a gzip file, also will correctly read from the zip file
>>      */
>>     class GZipFile : File {
>>       import std.c.stdio;
>>       import etc.c.zlib;
>>
>>       FILE* fp;
>>       gzFile fpGZip;
>>
>>       /**
>>        * Use gzopen to open the zip file
>>        */
>>       this(string filename) {
>>         fp = fopen(filename.toStringz, "rb");
>>         enforce(fp !is null, "Failed to open file '%s'".format(filename));
>>
>>         version(Windows) {
>>           fpGZip = gzdopen(fp._file, "rb");
>>           super(fpGZip, FileMode.In);
>>         } else {
>>           fpGZip = gzdopen(fileno(fp), "rb");
>>           super(cast(int)fpGZip, FileMode.In);
>>         }
>>         seekable = true;
>>
>>         // Still not supported... sigh
>>         //gzbuffer(fpGZip, 1024 * 1024);
>>       }
>>
>>
>>       ulong tell() {
>>         fflush(fp);
>>         return ftell(fp);
>>       }
>>
>>       /**
>>        * read data block with gzread
>>        */
>>       override size_t readBlock(void* buffer, size_t size) {
>>           assertReadable();
>>
>>           size = gzread(fpGZip, buffer, cast(uint)size);
>>           if (size == -1) {
>>               size = 0;
>>           }
>>
>>           // use gzeof to test for end of file
>>           readEOF = fpGZip.gzeof != 0;
>>           return size;
>>       }
>>
>>       /**
>>        * make sure we close with gzclose
>>        */
>>       override void close() {
>>         gzclose(fpGZip);
>>         fpGZip = null;
>>         fp = null;
>>       }
>>   }
>>
>> public:
>>   this(string filename) {
>>     gZipFile = new GZipFile(filename);
>>     super(gZipFile);
>>   }
>>
>>   ulong tell() {
>>     return gZipFile.tell;
>>   }
>> }
>>
>>
>> void main() {
>>
>> }
>
>
> Commenting out
>
> gzclose(fpGZip);
>
> allows it to compile..

Submitted reduced case as a bug:
https://issues.dlang.org/show_bug.cgi?id=15457


import etc.c.zlib;

void main() {
  gzclose(null);
}

On Wednesday, 16 December 2015 at 18:30:41 UTC, Byron Heads wrote:
> On Wednesday, 16 December 2015 at 18:21:33 UTC, Byron Heads wrote:
>> On Wednesday, 16 December 2015 at 18:14:35 UTC, Byron Heads wrote:
>>> [...]
>>
>>
>> Commenting out
>>
>> gzclose(fpGZip);
>>
>> allows it to compile..
>
> Submitted reduced case as a bug:
> https://issues.dlang.org/show_bug.cgi?id=15457
>
>
> import etc.c.zlib;
>
> void main() {
>   gzclose(null);
> }

I searched the function "__lseek64" under /usr/include/dmd" with "grep -R __lseek64", but nothing is found. I work on Linux 64-bit. So, I guess it is either Windows related, or 32bit dmd related. "lseek64" is found in "unistd.d", but this doesn't solve any problem.

On Thursday, 17 December 2015 at 04:11:56 UTC, tcak wrote:
> I searched the function "__lseek64" under /usr/include/dmd" with "grep -R __lseek64", but nothing is found. I work on Linux 64-bit. So, I guess it is either Windows related, or 32bit dmd related. "lseek64" is found in "unistd.d", but this doesn't solve any problem.

After some testing it seems that
-m32mscoff and -m64 both build correctly so its related to 32bit dmd on windows

On Thursday, 17 December 2015 at 04:11:56 UTC, tcak wrote:
> On Wednesday, 16 December 2015 at 18:30:41 UTC, Byron Heads wrote:
>> On Wednesday, 16 December 2015 at 18:21:33 UTC, Byron Heads wrote:
>>> On Wednesday, 16 December 2015 at 18:14:35 UTC, Byron Heads
> I searched the function "__lseek64" under /usr/include/dmd" with "grep -R __lseek64", but nothing is found. I work on Linux 64-bit. So, I guess it is either Windows related, or 32bit dmd related. "lseek64" is found in "unistd.d", but this doesn't solve any problem.

Of course it's windows related. 'lseek' is a posix function. There's a version/#define somewhere that's missing, maybe in the C binding, because under Windows lseek is 'SetFilePointer'.

But I'm not able to find it...
:/