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//===----------------------------------------------------------------------===//
//
// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <string>

// basic_string<charT,traits,Allocator>& assign(const charT* s);

#include <string>
#include <stdexcept>
#include <cassert>

template <class S>
void
test(S s, const typename S::value_type* str, S expected)
{
    s.assign(str);
    assert(s.__invariants());
    assert(s == expected);
}

int main()
{
    typedef std::string S;
    test(S(), "", S());
    test(S(), "12345", S("12345"));
    test(S(), "12345678901234567890", S("12345678901234567890"));

    test(S("12345"), "", S());
    test(S("12345"), "12345", S("12345"));
    test(S("12345"), "1234567890", S("1234567890"));

    test(S("12345678901234567890"), "", S());
    test(S("12345678901234567890"), "12345", S("12345"));
    test(S("12345678901234567890"), "12345678901234567890",
         S("12345678901234567890"));
}