docs/95059: Incorrect example in wordexp(3) manpage
>Number: 95059
>Category: docs
>Synopsis: Incorrect example in wordexp(3) manpage
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-doc
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: doc-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Mar 29 00:10:13 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Jos Backus
>Release: -current
>Organization:
>Environment:
FreeBSD lizzy.catnook.local 7.0-CURRENT FreeBSD 7.0-CURRENT #20: Sun Mar 19 17:20:05 PST 2006 root@lizzy.catnook.local:/usr/obj/usr/src/sys/LIZZY i386
>Description:
The wordexp(3) manpage has an incorrect example: it uses pointer dereferencing whereas it should simply be accessing structure members:
lizzy:/tmp% cat we.c
#include <wordexp.h>
int
main(int argc, char **argv)
{
wordexp_t we;
wordexp("${EDITOR:-vi} *.c /etc/motd", &we, 0);
execvp(we->we_wordv[0], we->we_wordv);
exit(0);
}
lizzy:/tmp% lizzy:/tmp% make we
cc -O2 -fno-strict-aliasing -pipe we.c -o we
we.c: In function `main':
we.c:9: error: invalid type argument of `->'
we.c:9: error: invalid type argument of `->'
*** Error code 1
Stop in /tmp.
lizzy:/tmp%
>How-To-Repeat:
>Fix:
Patch the manpage:
--- wordexp.3.orig Tue Mar 28 15:36:44 2006
+++ wordexp.3 Tue Mar 28 15:37:15 2006
@@ -167,7 +167,7 @@
wordexp_t we;
wordexp("${EDITOR:-vi} *.c /etc/motd", &we, 0);
-execvp(we->we_wordv[0], we->we_wordv);
+execvp(we.we_wordv[0], we.we_wordv);
.Ed
.Sh DIAGNOSTICS
Diagnostic messages from the shell are written to the standard error output
>Release-Note:
>Audit-Trail:
>Unformatted:
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