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authorpjanzen <pjanzen@openbsd.org>2001-06-25 03:23:55 +0000
committerpjanzen <pjanzen@openbsd.org>2001-06-25 03:23:55 +0000
commitec9d17ebbebdb475cb3f75c7068861377dba2fb9 (patch)
tree45a178ebd46c63740a5fe0700f655bed6ad189ef /lib/libc/gen/isgraph.3
parentadd pf device on all architectures. (diff)
downloadwireguard-openbsd-ec9d17ebbebdb475cb3f75c7068861377dba2fb9.tar.xz
wireguard-openbsd-ec9d17ebbebdb475cb3f75c7068861377dba2fb9.zip
Document that behaviour is undefined if the argument isn't EOF or an unsigned
char.
Diffstat (limited to 'lib/libc/gen/isgraph.3')
-rw-r--r--lib/libc/gen/isgraph.310
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/libc/gen/isgraph.3 b/lib/libc/gen/isgraph.3
index 89dc7abaaa8..872e717026b 100644
--- a/lib/libc/gen/isgraph.3
+++ b/lib/libc/gen/isgraph.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: isgraph.3,v 1.5 1999/07/09 13:35:18 aaron Exp $
+.\" $OpenBSD: isgraph.3,v 1.6 2001/06/25 03:24:01 pjanzen Exp $
.\"
.\" Copyright (c) 1991 The Regents of the University of California.
.\" All rights reserved.
@@ -78,3 +78,11 @@ The
.Fn isgraph
function conforms to
.St -ansiC .
+.Sh CAVEATS
+The argument to
+.Fn isgraph
+must be
+.Dv EOF
+or representable as an
+.Li unsigned char ;
+otherwise, the result is undefined.