solidity/test/libsolidity/semanticTests/storage/mappings_array2d_pop_delete.sol

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contract C {
mapping (uint => uint)[][] a;
function n1(uint key, uint value) public {
a.length++;
mapping (uint => uint)[] storage b = a[a.length - 1];
b.length++;
b[b.length - 1][key] = value;
}
function n2() public {
a.length++;
mapping (uint => uint)[] storage b = a[a.length - 1];
b.length++;
}
function map(uint key) public view returns (uint) {
mapping (uint => uint)[] storage b = a[a.length - 1];
return b[b.length - 1][key];
}
function p() public {
a.pop();
}
function d() public returns (uint) {
delete a;
return a.length;
}
}
// ----
// n1(uint256,uint256): 42, 64 ->
// map(uint256): 42 -> 64
// p() ->
// n2() ->
// map(uint256): 42 -> 64
// d() -> 0
// n2() ->
// map(uint256): 42 -> 64