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patch 8.2.1454: Vim9: failure invoking lambda with wrong arguments

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Problem:    Vim9: failure invoking lambda with wrong arguments.
Solution:   Handle invalid arguments.  Add a test.
This commit is contained in:
Bram Moolenaar
2020-08-14 22:16:33 +02:00
parent 8de2f44ac6
commit 79e8db9a21
4 changed files with 17 additions and 1 deletions
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8
src/testdir/test_vim9_expr.vim
View File

@@ -1584,6 +1584,14 @@ def Test_expr7_lambda()
call CheckDefFailure(["filter([1, 2], {k,v -> 1})"], 'E1069:')
call CheckDefFailure(["let L = {a -> a + b}"], 'E1001:')
assert_equal('xxxyyy', 'xxx'->{a, b -> a .. b}('yyy'))
CheckDefExecFailure(["let s = 'asdf'->{a -> a}('x')"],
'E1106: one argument too many')
CheckDefExecFailure(["let s = 'asdf'->{a -> a}('x', 'y')"],
'E1106: 2 arguments too many')
CheckDefFailure(["echo 'asdf'->{a -> a}(x)"], 'E1001:')
enddef
def Test_expr7_lambda_vim9script()

2
src/version.c
View File

@@ -754,6 +754,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1454,
/**/
1453,
/**/

3
src/vim9compile.c
View File

@@ -1361,6 +1361,9 @@ generate_CALL(cctx_T *cctx, ufunc_T *ufunc, int pushed_argcount)
continue;
expected = ufunc->uf_arg_types[i];
}
else if (ufunc->uf_va_type == NULL)
// possibly a lambda
expected = &t_any;
else
expected = ufunc->uf_va_type->tt_member;
actual = ((type_T **)stack->ga_data)[stack->ga_len - argcount + i];

5
src/vim9execute.c
View File

@@ -206,7 +206,10 @@ call_dfunc(int cdf_idx, int argcount_arg, ectx_T *ectx)
arg_to_add = ufunc->uf_args.ga_len - argcount;
if (arg_to_add < 0)
{
iemsg("Argument count wrong?");
if (arg_to_add == -1)
emsg(_("E1106: one argument too many"));
else
semsg(_("E1106: %d arguments too many"), -arg_to_add);
return FAIL;
}
if (ga_grow(&ectx->ec_stack, arg_to_add + 3