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-rw-r--r--ChangeLog6
-rw-r--r--manual/stdio.texi3
2 files changed, 8 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 41e6190..3ccd2f7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-04-12 Petr Baudis <pasky@ucw.cz>
+
+ [BZ #2074]
+ * stdio.texi (Hook Functions): The user provided writer function
+ is not allowed to return -1.
+
2012-04-11 David S. Miller <davem@davemloft.net>
* sysdeps/sparc/fpu/libm-test-ulps: Update.
diff --git a/manual/stdio.texi b/manual/stdio.texi
index e870afb..c58ca22 100644
--- a/manual/stdio.texi
+++ b/manual/stdio.texi
@@ -5021,7 +5021,8 @@ ssize_t @var{writer} (void *@var{cookie}, const char *@var{buffer}, size_t @var{
This is very similar to the @code{write} function; see @ref{I/O
Primitives}. Your function should transfer up to @var{size} bytes from
the buffer, and return the number of bytes written. You can return a
-value of @code{-1} to indicate an error.
+value of @code{0} to indicate an error. You must not return any
+negative value.
You should define the function to perform seek operations on the cookie
as: