[Bug-glpk] write error on <stdout> - output buffer overflow

[xypron]

Hello Andrew,

the following model returns an error
"write error on <stdout> - output buffer overflow"

for {i in 1..2000}
  printf "%6s", "x";
end;

Currently the output buffer is only flushed when reaching a new line.

For very long output lines the buffer should be flushed instead of
throwing an error.

The problem is in write_char (file glpmpl04.c)

The following change should resolve it.

Please, replace 
         if (mpl->out_cnt == OUTBUF_SIZE)
            error(mpl, "write error on %s - output buffer overflow",
               mpl->out_file);
by
         mpl->out_buf[mpl->out_cnt++] = (char)c;
         if (mpl->out_cnt == OUTBUF_SIZE - 1)
         {  mpl->out_buf[mpl->out_cnt] = '\0';
            if (mpl->out_fp == stdout)
               xprintf("%s", mpl->out_buf);
            else
               fprintf(mpl->out_fp, "%s", mpl->out_buf);
            mpl->out_cnt = 0;
         }

Best regards

Xypron

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