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-rw-r--r--ChangeLog5
-rw-r--r--libio/fileops.c3
2 files changed, 7 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index e292f18..f18226a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2002-07-24 Roland McGrath <roland@frob.com>
+
+ * libio/fileops.c (_IO_file_seekoff_mmap): Don't rely on FP->_offset,
+ which gets moved around. Calculate size of mmap'd buffer instead.
+
2002-07-24 Philip Blundell <philb@gnu.org>
* sysdeps/unix/arm/brk.S: Improve schedule.
diff --git a/libio/fileops.c b/libio/fileops.c
index 1794dce..5603e5a 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -932,7 +932,8 @@ _IO_file_seekoff_mmap (fp, offset, dir, mode)
using a pushback buffer, but in the usual case has the same value as
(fp->_IO_read_ptr - fp->_IO_buf_base). */
if (mode == 0)
- return fp->_offset - (fp->_IO_read_end - fp->_IO_read_ptr);
+ return ((fp->_IO_buf_end - fp->_IO_buf_base)
+ - (fp->_IO_read_end - fp->_IO_read_ptr));
switch (dir)
{