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authorTodd C. Miller <millert@cvs.openbsd.org>2004-03-02 15:56:25 +0000
committerTodd C. Miller <millert@cvs.openbsd.org>2004-03-02 15:56:25 +0000
commitfdce9dac8aeb87605ee94f54a277c181437f2107 (patch)
treeb0236084c09092d84ce098b31c8059ea5fd7839f /lib
parentb2ab8e5ac9af87534fa0c9ba2f645cb211aa6d68 (diff)
Better wording for the longjmp(X, 0) case. OK otto@, deraadt@
Diffstat (limited to 'lib')
-rw-r--r--lib/libc/gen/setjmp.314
1 files changed, 6 insertions, 8 deletions
diff --git a/lib/libc/gen/setjmp.3 b/lib/libc/gen/setjmp.3
index 5fa4c78e2cd..7b8ba2ed6ab 100644
--- a/lib/libc/gen/setjmp.3
+++ b/lib/libc/gen/setjmp.3
@@ -1,4 +1,4 @@
-.\" $OpenBSD: setjmp.3,v 1.18 2004/03/01 19:55:59 otto Exp $
+.\" $OpenBSD: setjmp.3,v 1.19 2004/03/02 15:56:24 millert Exp $
.\"
.\" Copyright (c) 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@@ -81,15 +81,13 @@ invocation of the
call had just returned the value specified by
.Fa val ,
instead of 0.
-In this case
-.Fn setjmp
-never returns 0; if the value of the
+The value specified by
.Fa val
-argument to
-.Fn longjmp
-is 0,
+must be non-zero; a 0 value is treated as 1 to allow the programmer
+to differentiate between a direct invovation of
.Fn setjmp
-returns 1.
+and a return via
+.Fn longjmp .
.Pp
Pairs of calls may be intermixed; i.e., both
.Fn sigsetjmp