Bug 207

Summary:	weird behavior with hush, printf, and empty args
Product:	Busybox	Reporter:	Mike Frysinger <vapier>
Component:	Standard Compliance	Assignee:	unassigned
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	busybox-cvs
Priority:	P5
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Linux
Host:		Target:
Build:

Description Mike Frysinger 2009-03-20 10:42:11 UTC

i cant explain this one ...

$ cat test.sh
printf '%s\n' "$@"
$ ./busybox hush ./test.sh
n$

looks like when printf %s gets "" it incorrectly consumes an extra byte ?

bash works fine:
$ sh ./test.sh

$

Comment 1 Denys Vlasenko 2009-03-20 10:52:10 UTC

It just converts "\n" to "n". strace:

execve("/root/bin/printf", ["printf", "%sn"], [/* 30 vars */])...

Looking into it...

Comment 2 Mike Frysinger 2009-03-20 11:12:57 UTC

i say "weird" because it works fine with arguments:
$ ./busybox hush ./test.sh 1
1
$

Comment 3 Denys Vlasenko 2009-03-20 11:33:53 UTC

I updated hush hot fix, please try it:

http://busybox.net/downloads/fixes-1.13.3/busybox-1.13.3-hush.patch

Comment 4 Mike Frysinger 2009-03-20 12:37:00 UTC

yep, thanks