patch 7.4.2223
Problem: Buffer overflow when using latin1 character with feedkeys().
Solution: Check for an illegal character. Add a test.
diff --git a/src/testdir/test_source_utf8.vim b/src/testdir/test_source_utf8.vim
new file mode 100644
index 0000000..edb76fc
--- /dev/null
+++ b/src/testdir/test_source_utf8.vim
@@ -0,0 +1,33 @@
+" Test the :source! command
+if !has('multi_byte')
+ finish
+endif
+
+func Test_source_utf8()
+ " check that sourcing a script with 0x80 as second byte works
+ new
+ call setline(1, [':%s/àx/--à1234--/g', ':%s/Àx/--À1234--/g'])
+ write! Xscript
+ bwipe!
+ new
+ call setline(1, [' àx ', ' Àx '])
+ source! Xscript | echo
+ call assert_equal(' --à1234-- ', getline(1))
+ call assert_equal(' --À1234-- ', getline(2))
+ bwipe!
+ call delete('Xscript')
+endfunc
+
+func Test_source_latin()
+ " check that sourcing a latin1 script with a 0xc0 byte works
+ new
+ call setline(1, ["call feedkeys('r')", "call feedkeys('\xc0', 'xt')"])
+ write! Xscript
+ bwipe!
+ new
+ call setline(1, ['xxx'])
+ source Xscript
+ call assert_equal("\u00c0xx", getline(1))
+ bwipe!
+ call delete('Xscript')
+endfunc