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51417: Check subscripts in named reference values more rigorously.

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This commit is contained in:
Bart Schaefer 2023-02-12 12:20:33 -08:00
parent acb15e3cc9
commit f4c706f0c8
3 changed files with 15 additions and 3 deletions

3
ChangeLog
View file

@ -1,5 +1,8 @@
2023-02-12 Bart Schaefer <schaefer@zsh.org>
* 51417: Src/params.c, Test/K01nameref.ztst: Check subscripts
in named reference values more rigorously.
* 51403: Doc/Zsh/builtins.yo, Doc/Zsh/expn.yo, Doc/Zsh/func.yo,
Doc/Zsh/grammar.yo, Doc/Zsh/params.yo, Test/K01nameref.ztst:
Tests and documentation for 51402, clean up some other tests.

11
Src/params.c
View file

@ -6281,7 +6281,16 @@ valid_refname(char *val)
if (*t != 0) {
if (*t == '[') {
tokenize(t = dupstring(t+1));
t = parse_subscript(t, 0, ']');
while ((t = parse_subscript(t, 0, ']')) && *t++ == Outbrack) {
if (*t == Inbrack)
++t;
else
break;
}
if (t && *t) {
/* zwarn("%s: stuff after subscript: %s", val, t); */
t = NULL;
}
} else if (t[1] || !(*t == '!' || *t == '?' ||
*t == '$' || *t == '-' ||
*t == '0' || *t == '_')) {

4
Test/K01nameref.ztst
View file

@ -350,9 +350,9 @@ F:ksh93 does not implement this either
>typeset -A hash=( [y]=HIT )
unset -n ptr1
typeset -n ptr1='not good'
typeset -n ptr1='not[2]good'
1:invalid nameref
*?*invalid variable name: not good
*?*invalid variable name: not\[2\]good
unset -n ptr1
unset hash