invalidate-all-iterators.cpp:20:4: error: [iterator-checker] Potentially invalid iterator used.
*it1 = 1;
^
invalidate-all-iterators.cpp:21:4: error: [iterator-checker] Potentially invalid iterator used.
*it2 = 2;
^
invalidate-all-iterators.cpp:22:4: error: [iterator-checker] Potentially invalid iterator used.
*it3 = 3;
^
3 errors generated.