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patch 8.0.1421: accessing invalid memory with overlong byte sequence

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Problem:    Accessing invalid memory with overlong byte sequence.
Solution:   Check for NUL character. (test by Dominique Pelle, closes #2485)
This commit is contained in:
Bram Moolenaar
2017-12-22 21:06:56 +01:00
parent 3c09722600
commit e6640ad44e
3 changed files with 26 additions and 2 deletions
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10
src/testdir/test_functions.vim
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@@ -268,6 +268,11 @@ func Test_tolower()
" Ⱥ (U+023A) and Ⱦ (U+023E) are the *only* code points to increase
" in length (2 to 3 bytes) when lowercased. So let's test them.
call assert_equal("ⱥ ⱦ", tolower("Ⱥ Ⱦ"))
" This call to tolower with invalid utf8 sequence used to cause access to
" invalid memory.
call tolower("\xC0\x80\xC0")
call tolower("123\xC0\x80\xC0")
endfunc
func Test_toupper()
@@ -338,6 +343,11 @@ func Test_toupper()
call assert_equal("ZŹŻŽƵẐẔ", toupper("ZŹŻŽƵẐẔ"))
call assert_equal("Ⱥ Ⱦ", toupper("ⱥ ⱦ"))
" This call to toupper with invalid utf8 sequence used to cause access to
" invalid memory.
call toupper("\xC0\x80\xC0")
call toupper("123\xC0\x80\xC0")
endfunc
" Tests for the mode() function