1 // Deque iterator invalidation tests
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20 #include <debug/deque>
21 #include <testsuite_hooks.h>
23 using __gnu_debug::deque;
32 deque<int>::iterator before = v.begin() + 6;
33 deque<int>::iterator at = before + 1;
34 deque<int>::iterator after = at + 1;
38 VERIFY(before._M_dereferenceable());
39 VERIFY(at._M_singular());
40 VERIFY(after._M_singular());
43 before = v.begin() + 6;
45 VERIFY(before._M_singular());