Patch 8.2.2159
Problem: Vim9: when declaring a list it is not allocated yet, causing a
following extend() to fail.
Solution: When fetching a variable value for a list or dict that is null
allocate the list or dict, so it can be used. (closes #7491)
Files: src/vim9execute.c, src/testdir/test_vim9_assign.vim
*** ../vim-8.2.2158/src/vim9execute.c 2020-12-12 20:42:16.123207537 +0100
--- src/vim9execute.c 2020-12-18 17:22:39.654455314 +0100
***************
*** 791,796 ****
--- 791,816 ----
restore_funccal();
}
+ /*
+ * When the value of "sv" is a null list of dict, allocate it.
+ */
+ static void
+ allocate_if_null(typval_T *tv)
+ {
+ switch (tv->v_type)
+ {
+ case VAR_LIST:
+ if (tv->vval.v_list == NULL)
+ rettv_list_alloc(tv);
+ break;
+ case VAR_DICT:
+ if (tv->vval.v_dict == NULL)
+ rettv_dict_alloc(tv);
+ break;
+ default:
+ break;
+ }
+ }
/*
* Execute a function by "name".
***************
*** 1289,1294 ****
--- 1309,1315 ----
sv = ((svar_T *)si->sn_var_vals.ga_data)
+ iptr->isn_arg.script.script_idx;
+ allocate_if_null(sv->sv_tv);
if (GA_GROW(&ectx.ec_stack, 1) == FAIL)
goto failed;
copy_tv(sv->sv_tv, STACK_TV_BOT(0));
*** ../vim-8.2.2158/src/testdir/test_vim9_assign.vim 2020-12-18
15:37:57.248171925 +0100
--- src/testdir/test_vim9_assign.vim 2020-12-18 17:17:04.923439023 +0100
***************
*** 391,396 ****
--- 391,406 ----
assert_equal(['a', 'b'], list)
END
CheckScriptSuccess(lines)
+ lines =<< trim END
+ vim9script
+ var list: list<string>
+ def Func()
+ extend(list, ['x', 'b'])
+ enddef
+ Func()
+ assert_equal(['x', 'b'], list)
+ END
+ CheckScriptSuccess(lines)
lines =<< trim END
vim9script
***************
*** 584,591 ****
return test
enddef
FillDict()
END
! CheckScriptFailure(lines, 'E1103:')
# assignment to global dict
lines =<< trim END
--- 594,602 ----
return test
enddef
FillDict()
+ assert_equal({a: 43}, test)
END
! CheckScriptSuccess(lines)
# assignment to global dict
lines =<< trim END
*** ../vim-8.2.2158/src/version.c 2020-12-18 16:29:21.716008176 +0100
--- src/version.c 2020-12-18 17:05:52.817555014 +0100
***************
*** 752,753 ****
--- 752,755 ----
{ /* Add new patch number below this line */
+ /**/
+ 2159,
/**/
--
BLACK KNIGHT: The Black Knight always triumphs. Have at you!
ARTHUR takes his last leg off. The BLACK KNIGHT's body lands upright.
BLACK KNIGHT: All right, we'll call it a draw.
"Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD
/// Bram Moolenaar -- b...@moolenaar.net -- http://www.Moolenaar.net \\\
/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\ an exciting new programming language -- http://www.Zimbu.org ///
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