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patch 9.0.1104: invalid memory access when checking function argument types

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Problem:    Invalid memory access when checking function argument types.
Solution:   Do not check beyond the number of arguments. (closes #11755)
This commit is contained in:
Bram Moolenaar 2022-12-27 17:25:05 +00:00
parent b9a1edfc54
commit 56310d38d8
3 changed files with 13 additions and 1 deletions
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10
src/testdir/test_vim9_func.vim
View File

@ -426,6 +426,16 @@ def Test_check_argument_type()
Func()
END
v9.CheckScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected number but got bool', 2)
lines =<< trim END
vim9script
def Foobar(Fn: func(any, ?string): any)
enddef
Foobar((t) => 0)
END
v9.CheckScriptSuccess(lines)
enddef
def Test_missing_return()

2
src/version.c
View File

@ -695,6 +695,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1104,
/**/
1103,
/**/

2
src/vim9type.c
View File

@ -848,7 +848,7 @@ check_type_maybe(
{
int i;
for (i = 0; i < expected->tt_argcount; ++i)
for (i = 0; i < expected->tt_argcount && i < actual->tt_argcount; ++i)
// Allow for using "any" argument type, lambda's have them.
if (actual->tt_args[i] != &t_any && check_type(
expected->tt_args[i], actual->tt_args[i], FALSE,