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patch 8.2.3650: Vim9: for loop variable can be a list member

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Problem:    Vim9: for loop variable can be a list member.
Solution:   Check for valid variable name. (closes #9179)
This commit is contained in:
Bram Moolenaar
2021-11-22 20:10:18 +00:00
parent 7a53f29c03
commit 3b3755fe19
7 changed files with 38 additions and 9 deletions
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7
src/evalvars.c
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@@ -3431,7 +3431,7 @@ set_var_const(
// Make sure the variable name is valid. In Vim9 script an autoload
// variable must be prefixed with "g:".
if (!valid_varname(varname, !vim9script
if (!valid_varname(varname, -1, !vim9script
|| STRNCMP(name, "g:", 2) == 0))
goto failed;
@@ -3631,14 +3631,15 @@ value_check_lock(int lock, char_u *name, int use_gettext)
/*
* Check if a variable name is valid. When "autoload" is true "#" is allowed.
* If "len" is -1 use all of "varname", otherwise up to "varname[len]".
* Return FALSE and give an error if not.
*/
int
valid_varname(char_u *varname, int autoload)
valid_varname(char_u *varname, int len, int autoload)
{
char_u *p;
for (p = varname; *p != NUL; ++p)
for (p = varname; len < 0 ? *p != NUL : p < varname + len; ++p)
if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p))
&& !(autoload && *p == AUTOLOAD_CHAR))
{