From: Peter Stephenson <p.stephenson@samsung.com>
To: zsh-workers@zsh.org
Subject: Re: LOCAL_VARS option ?
Date: Wed, 25 Jan 2017 09:24:38 +0000 [thread overview]
Message-ID: <20170125092438.215f5a2c@pwslap01u.europe.root.pri> (raw)
In-Reply-To: <20170125055009.GA11466@fujitsu.shahaf.local2>
On Wed, 25 Jan 2017 05:50:09 +0000
Daniel Shahaf <d.s@daniel.shahaf.name> wrote:
> This case seems to be a false positive:
>
> % () { typeset -A a; : ${a[hello world]::=foo} }
> (anon): scalar parameter hello world set in enclosing scope in function (anon)
There's a bogus parameter created for assistance in this case. I didn't
see what was going on so I didn't turn off the new warning.
By the way, you won't get a warning in a case like this:
() {
local var=(one two)
() { var[3]=three; }
print $var
}
which is probably OK because setting an element of something already
presupposes it exists. The WARN_CREATE_GLOBAL equivalent does operate
here, so you're protected if it doesn't exist. You also get a warning
if you trash the whole array:
() {
local var=(one two)
() { var=(three); }
print $var
}
However, you don't get a warning if you change the array to something
else:
() {
local var=(one two)
() { var=three; }
print $var
}
That's a crucial case for protecting against problems and needs looking
at in the tortuous type conversion logic.
pws
diff --git a/Src/params.c b/Src/params.c
index ebdd252..a629cf4 100644
--- a/Src/params.c
+++ b/Src/params.c
@@ -2926,7 +2926,11 @@ assignsparam(char *s, char *val, int flags)
unqueue_signals();
return NULL;
}
- flags &= ~ASSPM_WARN_CREATE;
+ /*
+ * Parameter defined here is a temporary bogus one.
+ * Don't warn about anything.
+ */
+ flags &= ~ASSPM_WARN;
}
*ss = '[';
v = NULL;
diff --git a/Test/E01options.ztst b/Test/E01options.ztst
index bcd89f7..fd3263a 100644
--- a/Test/E01options.ztst
+++ b/Test/E01options.ztst
@@ -1188,6 +1188,21 @@
?fn_wnv:20: numeric parameter foo5 set in enclosing scope in function fn_wnv
?all off again
+
+ (
+ setopt warnnestedvar
+ () {
+ typeset -A a
+ : ${a[hello world]::=foo}
+ print ${(t)a}
+ key="hello world"
+ print $a[$key]
+ }
+ )
+0:No false positive on parameter used with subscripted assignment
+>association-local
+>foo
+
# This really just tests if XTRACE is egregiously broken.
# To test it properly would need a full set of its own.
fn() { print message; }
next prev parent reply other threads:[~2017-01-25 9:24 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170119070023epcas3p17d787fb31e7c04d5bcf2231020769b5f@epcas3p1.samsung.com>
2017-01-19 6:54 ` Daniel Shahaf
2017-01-19 9:43 ` Jens Elkner
2017-01-19 9:45 ` Peter Stephenson
2017-01-19 15:47 ` Bart Schaefer
2017-01-19 16:08 ` Peter Stephenson
2017-01-20 5:01 ` Bart Schaefer
2017-01-20 17:19 ` Peter Stephenson
2017-01-22 18:45 ` Bart Schaefer
2017-01-22 19:00 ` Peter Stephenson
2017-01-23 10:09 ` Peter Stephenson
2017-01-23 11:20 ` Daniel Shahaf
2017-01-23 11:37 ` Peter Stephenson
2017-01-25 5:50 ` Daniel Shahaf
2017-01-25 9:24 ` Peter Stephenson [this message]
2017-01-25 19:32 ` Daniel Shahaf
2017-01-25 21:50 ` Bart Schaefer
2017-01-29 21:21 ` Daniel Shahaf
2017-01-26 19:43 ` Peter Stephenson
2017-01-26 20:04 ` Peter Stephenson
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