Patch 9.0.1375

[Bram Moolenaar]

Patch 9.0.1375
Problem: Crash when getting member of obj of unknown class.
Solution: Check for NULL class and give an error message. (Ernie Rael,
closes #12096)
Files: src/errors.h, src/vim9expr.c, src/testdir/test_vim9_class.vim


*** ../vim-9.0.1374/src/errors.h 2023-02-26 18:58:19.754802188 +0000
--- src/errors.h 2023-03-03 14:54:29.284086132 +0000
***************
*** 3452,3455 ****
--- 3452,3457 ----
#ifdef FEAT_EVAL
EXTERN char e_cannot_use_non_null_object[]
INIT(= N_("E1362: Cannot use a non-null object"));
+ EXTERN char e_incomplete_type[]
+ INIT(= N_("E1363: Incomplete type"));
#endif
*** ../vim-9.0.1374/src/vim9expr.c 2023-02-21 12:38:46.827436713 +0000
--- src/vim9expr.c 2023-03-03 15:02:13.536616736 +0000
***************
*** 293,298 ****
--- 293,305 ----
}
}

+ if (cl == NULL)
+ {
+ // TODO: this should not give an error but be handled at runtime
+ emsg(_(e_incomplete_type));
+ return FAIL;
+ }
+
++*arg;
char_u *name = *arg;
char_u *name_end = find_name_end(name, NULL, NULL, FNE_CHECK_START);
*** ../vim-9.0.1374/src/testdir/test_vim9_class.vim 2023-03-02 17:38:30.019743929 +0000
--- src/testdir/test_vim9_class.vim 2023-03-03 15:01:57.700598951 +0000
***************
*** 272,277 ****
--- 272,296 ----
echo Colorscheme.new(bg).GetBackground()
END
v9.CheckScriptFailure(lines, 'E1012: Type mismatch; expected object<Background> but got object<Unknown>')
+
+ # TODO: this should not give an error but be handled at runtime
+ lines =<< trim END
+ vim9script
+
+ class Class
+ this.id: string
+ def Method1()
+ echo 'Method1' .. this.id
+ enddef
+ endclass
+
+ var obj = null_object
+ def Func()
+ obj.Method1()
+ enddef
+ Func()
+ END
+ v9.CheckScriptFailure(lines, 'E1363:')
enddef

def Test_class_member_initializer()
*** ../vim-9.0.1374/src/version.c 2023-03-03 12:26:11.557759297 +0000
--- src/version.c 2023-03-03 14:56:22.384217527 +0000
***************
*** 697,698 ****
--- 697,700 ----
{ /* Add new patch number below this line */
+ /**/
+ 1375,
/**/

--
Don't be humble ... you're not that great.
-- Golda Meir

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