fgetpos/ftell broken for memory streams in sarge

[Eneko Lacunza <elacunza@pandasoftware.es>]

Hi,

It seems that fgetpos/ftell are broken for memory streams in sarge (2.3.2.ds1-22).

The following example does not work as expected:

#define _GNU_SOURCE
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

int main( int argc, char* argv [] )
{
  int  i;
  char ch;
  FILE *is;
  fpos_t pos;
  char buffer[] = {"Hola mundo"};

  is = fmemopen( buffer, sizeof(buffer),"r+");

  for ( i = 0; i < strlen(buffer) ; i++ ){
    fread( &ch, sizeof(char), 1, is );
    printf( " fgetpos(is, &pos) : %d\n" , fgetpos(is, &pos) );
  }

  fclose(is);
  return 0;
}

the output on sarge is:
 fgetpos(is, &pos) : 0
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1
 fgetpos(is, &pos) : -1

The very same example using etch libc6 (2.3.5) works as expected (fgetpos returns always 0). errno is always 0, even in sarge.

I didn't find any bug in BTS regarding this. If this is a bug, should I submit it to BTS?

Thanks a lot.

Eneko.