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patch 8.2.2218: Vim9: failure if passing more args to lambda than expected

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Problem:    Vim9: failure if passing more arguments to a lambda than expected.
Solution:   Only put expected arguments on the stack. (closes #7548)
This commit is contained in:
Bram Moolenaar
2020-12-25 20:24:51 +01:00
parent 20a762987e
commit fc0e8f5c3e
3 changed files with 12 additions and 2 deletions
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7
src/vim9execute.c
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@@ -1020,8 +1020,11 @@ call_def_function(
ga_init2(&ectx.ec_trystack, sizeof(trycmd_T), 10);
ga_init2(&ectx.ec_funcrefs, sizeof(partial_T *), 10);
// Put arguments on the stack.
for (idx = 0; idx < argc; ++idx)
// Put arguments on the stack, but no more than what the function expects.
// A lambda can be called with more arguments than it uses.
for (idx = 0; idx < argc
&& (ufunc->uf_va_name != NULL || idx < ufunc->uf_args.ga_len);
++idx)
{
if (ufunc->uf_arg_types != NULL && idx < ufunc->uf_args.ga_len
&& check_typval_type(ufunc->uf_arg_types[idx], &argv[idx],