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vim-patch:9.0.1492: using uninitialized memory when argument is missing (#23351)
Problem: Using uninitialized memory when argument is missing.
Solution: Check there are sufficient arguments before the base.
(closes vim/vim#12302)
b7f2270bab
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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@ -287,6 +287,9 @@ int call_internal_method(const char *const fname, const int argcount, typval_T *
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typval_T argv[MAX_FUNC_ARGS + 1];
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const ptrdiff_t base_index = fdef->base_arg == BASE_LAST ? argcount : fdef->base_arg - 1;
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if (argcount < base_index) {
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return FCERR_TOOFEW;
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}
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memcpy(argv, argvars, (size_t)base_index * sizeof(typval_T));
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argv[base_index] = *basetv;
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memcpy(argv + base_index + 1, argvars + base_index,
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@ -407,6 +407,9 @@ func Test_printf_misc()
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call CheckLegacyAndVim9Success(lines)
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call CheckLegacyAndVim9Failure(["call printf('123', 3)"], "E767:")
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" this was using uninitialized memory
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call CheckLegacyAndVim9Failure(["eval ''->printf()"], "E119:")
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endfunc
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func Test_printf_float()
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