updated for version 7.4.569
Problem:    Having CTRL-C interrupt or not does not check the mode of the
            mapping. (Ingo Karkat)
Solution:   Use a bitmask with the map mode. (Christian Brabandt)
diff --git a/src/testdir/test_mapping.in b/src/testdir/test_mapping.in
index 5f895a4..c957569 100644
--- a/src/testdir/test_mapping.in
+++ b/src/testdir/test_mapping.in
@@ -8,6 +8,15 @@
 :inoreab чкпр   vim
 GAчкпр 
 
+:" mapping of ctrl-c in insert mode
+:set cpo-=< cpo-=k
+:inoremap <c-c> <ctrl-c>
+:cnoremap <c-c> dummy
+:cunmap <c-c>
+GA
+TEST2: CTRL-C |A|
+
+:nunmap <c-c>
 
 : " langmap should not get remapped in insert mode
 :inoremap { FAIL_ilangmap