malloc_info.3: RETURN VALUE: mention that 'errno' is set on error

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/malloc_info.3 b/man3/malloc_info.3
index 9f5ae02ec481f942daf44ace77e040ff118c7288..c7774f8140ef542ea8d778b805cb8048285c2fdf 100644 (file)
--- a/man3/malloc_info.3
+++ b/man3/malloc_info.3
@@ -22,7 +22,7 @@
 .\" the source, must acknowledge the copyright and authors of this work.
 .\" %%%LICENSE_END
 .\"
-.TH MALLOC_INFO 3  2012-04-28 "GNU" "Linux Programmer's Manual"
+.TH MALLOC_INFO 3  2013-04-19 "GNU" "Linux Programmer's Manual"
 .SH NAME
 malloc_info \- export malloc state to a stream
 .SH SYNOPSIS
@@ -49,7 +49,9 @@ must be zero.
 On success,
 .BR malloc_info ()
 returns 0;
-on error, it returns \-1.
+on error, it returns \-1, with
+.I errno
+set to indicate the cause.
 .SH ERRORS
 .TP
 .B EINVAL