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patch 8.2.2574: Vim9: crash when calling partial with wrong function

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Problem:    Vim9: crash when calling partial with wrong function.
Solution:   Check argument types of called function. (closes #7912)
This commit is contained in:
Bram Moolenaar
2021-03-06 19:26:46 +01:00
parent a974953443
commit 04947cc6ed
3 changed files with 46 additions and 0 deletions
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20
src/vim9execute.c
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@@ -797,7 +797,27 @@ call_by_name(char_u *name, int argcount, ectx_T *ectx, isn_T *iptr)
}
if (ufunc != NULL)
{
if (ufunc->uf_arg_types != NULL)
{
int i;
typval_T *argv = STACK_TV_BOT(0) - argcount;
// The function can change at runtime, check that the argument
// types are correct.
for (i = 0; i < argcount; ++i)
{
type_T *type = i < ufunc->uf_args.ga_len
? ufunc->uf_arg_types[i] : ufunc->uf_va_type;
if (type != NULL && check_typval_arg_type(type,
&argv[i], i + 1) == FAIL)
return FAIL;
}
}
return call_ufunc(ufunc, NULL, argcount, ectx, iptr);
}
return FAIL;
}