diff options
Diffstat (limited to 'libio/oldfileops.c')
| -rw-r--r-- | libio/oldfileops.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/libio/oldfileops.c b/libio/oldfileops.c index b9efca7aa8..3bd0aa175b 100644 --- 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. */ |