Patch 9.0.0212

[Bram Moolenaar]

Patch 9.0.0212
Problem: Invalid memory access when compiling :unlet.
Solution: Don't read past the end of the line.
Files: src/vim9cmds.c, src/testdir/test_vim9_cmd.vim


*** ../vim-9.0.0211/src/vim9cmds.c 2022-08-14 21:28:27.446201492 +0100
--- src/vim9cmds.c 2022-08-14 21:43:43.082516484 +0100
***************
*** 92,97 ****
--- 92,103 ----
int
check_vim9_unlet(char_u *name)
{
+ if (*name == NUL)
+ {
+ semsg(_(e_argument_required_for_str), "unlet");
+ return FAIL;
+ }
+
if (name[1] != ':' || vim_strchr((char_u *)"gwtb", *name) == NULL)
{
// "unlet s:var" is allowed in legacy script.
*** ../vim-9.0.0211/src/testdir/test_vim9_cmd.vim 2022-08-14 21:28:27.446201492 +0100
--- src/testdir/test_vim9_cmd.vim 2022-08-14 21:43:36.726541151 +0100
***************
*** 1740,1751 ****

lines =<< trim END
def _()
- s:0([], s:0)
lockv
enddef
defcomp
END
! v9.CheckScriptFailure(lines, 'E179', 2)
enddef

def Test_substitute_expr()
--- 1740,1758 ----

lines =<< trim END
def _()
lockv
enddef
defcomp
END
! v9.CheckScriptFailure(lines, 'E179', 1)
!
! lines =<< trim END
! def T()
! unlet
! enddef
! defcomp
! END
! v9.CheckScriptFailure(lines, 'E179', 1)
enddef

def Test_substitute_expr()
*** ../vim-9.0.0211/src/version.c 2022-08-14 21:28:27.446201492 +0100
--- src/version.c 2022-08-14 21:44:43.442292545 +0100
***************
*** 737,738 ****
--- 737,740 ----
{ /* Add new patch number below this line */
+ /**/
+ 212,
/**/

--
'I generally avoid temptation unless I can't resist it."
-- Mae West

/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
/// \\\
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