2.5-18.1

[jlayton/glibc.git] / libio / oldfileops.c

diff --git a/libio/oldfileops.c b/libio/oldfileops.c
index b9efca7aa8038e1ee6b496ea08e8f831acad02dd..3bd0aa175b9494a94ce9b849dffc4578a75e6c9c 100644 (file)
--- a/libio/oldfileops.c
+++ b/libio/oldfileops.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1993, 1995, 1997-2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1995, 1997-2004, 2005, 2007
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Per Bothner <bothner@cygnus.com>.
 
@@ -271,7 +272,7 @@ _IO_old_file_setbuf (fp, p, len)
     return fp;
 }
 
-static int old_do_write (_IO_FILE *, const char *, _IO_size_t) __THROW;
+static int old_do_write (_IO_FILE *, const char *, _IO_size_t);
 
 /* Write TO_DO bytes from DATA to FP.
    Then mark FP as having empty buffers. */
@@ -695,7 +696,7 @@ _IO_old_file_xsputn (f, data, n)
   register const char *s = (char *) data;
   _IO_size_t to_do = n;
   int must_flush = 0;
-  _IO_size_t count;
+  _IO_size_t count = 0;
 
   if (n <= 0)
     return 0;
@@ -704,7 +705,6 @@ _IO_old_file_xsputn (f, data, n)
      (or the filebuf is unbuffered), use sys_write directly. */
 
   /* First figure out how much space is available in the buffer. */
-  count = f->_IO_write_end - f->_IO_write_ptr; /* Space available. */
   if ((f->_flags & _IO_LINE_BUF) && (f->_flags & _IO_CURRENTLY_PUTTING))
     {
       count = f->_IO_buf_end - f->_IO_write_ptr;
@@ -722,6 +722,9 @@ _IO_old_file_xsputn (f, data, n)
            }
        }
     }
+  else if (f->_IO_write_end > f->_IO_write_ptr)
+    count = f->_IO_write_end - f->_IO_write_ptr; /* Space available. */
+
   /* Then fill the buffer. */
   if (count > 0)
     {
@@ -752,7 +755,7 @@ _IO_old_file_xsputn (f, data, n)
       _IO_size_t block_size, do_write;
       /* Next flush the (full) buffer. */
       if (__overflow (f, EOF) == EOF)
-       return n - to_do;
+       return to_do == 0 ? EOF : n - to_do;
 
       /* Try to maintain alignment: write a whole number of blocks.
         dont_write is what gets left over. */