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vim-patch:9.0.0220: invalid memory access with for loop over NULL string

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Problem:    Invalid memory access with for loop over NULL string.
Solution:   Make sure mb_ptr2len() consistently returns zero for NUL.
f6d39c31d2
This commit is contained in:
zeertzjq
2022-08-17 08:58:51 +08:00
parent 542fa8a9cc
commit 65bcec9e9b
2 changed files with 14 additions and 2 deletions
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4
src/nvim/mbyte.c
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@@ -890,9 +890,9 @@ int utf_ptr2len_len(const char_u *p, int size)
return len;
}
/// Return the number of bytes occupied by a UTF-8 character in a string
///
/// Return the number of bytes occupied by a UTF-8 character in a string.
/// This includes following composing characters.
/// Returns zero for NUL.
int utfc_ptr2len(const char *const p_in)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_NONNULL_ALL
{