Date: Tue, 3 Aug 1999 08:36:17 -0700 (PDT) From: ca+freebsd@endmail.org To: FreeBSD-gnats-submit@freebsd.org Cc: ca+freebsd@endmail.org Subject: bin/12942: m4: len(`') returns `' Message-ID: <199908031536.IAA11408@zable.Sendmail.COM>
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>Number: 12942
>Category: bin
>Synopsis: m4: len(`') returns `'
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Aug 3 09:00:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Claus Assmann
>Release: FreeBSD 3.2-STABLE i386
>Organization:
Endmail.ORG
>Environment:
standard installation of FreeBSD 3.2-STABLE i386
or FreeBSD 2.2.7-RELEASE i386
>Description:
the len function in /usr/bin/m4 returns an empty string
if given an empty string as argument instead of 0.
>How-To-Repeat:
$ echo 'len()' | m4
$ echo 'len()' | gm4
0
>Fix:
Patch (fixes this problem, side-effects unknown...)
--- eval.c Mon Aug 2 21:53:42 1999
+++ /usr/src/usr.bin/m4/eval.c Mon Sep 7 15:09:13 1998
@@ -97,7 +97,7 @@
* have macro-or-builtin() type call. We adjust
* argc to avoid further checking..
*/
- if (argc == 3 && !*(argv[2]) && (td & ~STATIC) != LENGTYPE)
+ if (argc == 3 && !*(argv[2]))
argc--;
switch (td & ~STATIC) {
>Release-Note:
>Audit-Trail:
>Unformatted:
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