Hi,
you can reproduce the problem with this little program, more or less copied
from man-db source.
If you use it on the mandb.8 file from man-db package, it reads 4096 bytes; the second call to gzread
returns 0, although the file size is 6554 bytes.
Upgrading to zlib_1.2.3.4.dfsg-2 seems *NOT* to fix the problem.
I don't know what other files makes problem or if you're allowed to gzopen not
compressed files at all.
./program < man-db-2.5.6/man/ja/man8/mandb.8 | wc -c ==> 4096
#include <stdlib.h>
#include <stdio.h>
#include <zlib.h>
int main(void)
{
gzFile zlibfile;
zlibfile = gzdopen(0, "r");
if(!zlibfile) abort();
for(;;) {
char buffer[4096];
int r = gzread (zlibfile, buffer, 4096);
if(r <= 0)
break;
if(fwrite(buffer, 1, (size_t) r, stdout) < (size_t) r)
break;
}
gzclose(zlibfile);
return 0;
}
Cheers,
Joern
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