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Fix assignment operations to be safe after a move.

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Added test cases to catch bug case.
Refs #8667.

[SVN r84687]
This commit is contained in:
John Maddock
2013-06-08 14:07:21 +00:00
parent 3ee4005731
commit cdd63adfcd
3 changed files with 95 additions and 9 deletions
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45
test/test_move.cpp
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@@ -84,6 +84,36 @@ void test_std_lib()
BOOST_TEST(b == 2);
}
template <class T, class A>
void test_move_and_assign(T x, A val)
{
// move away from x, then assign val to x.
T z(x);
T y(std::move(x));
x.assign(val);
BOOST_CHECK_EQUAL(x, T(val));
BOOST_CHECK_EQUAL(z, y);
}
template <class T>
void test_move_and_assign()
{
T x(23);
test_move_and_assign(x, static_cast<short>(2));
test_move_and_assign(x, static_cast<int>(2));
test_move_and_assign(x, static_cast<long>(2));
test_move_and_assign(x, static_cast<long long>(2));
test_move_and_assign(x, static_cast<unsigned short>(2));
test_move_and_assign(x, static_cast<unsigned int>(2));
test_move_and_assign(x, static_cast<unsigned long>(2));
test_move_and_assign(x, static_cast<unsigned long long>(2));
test_move_and_assign(x, static_cast<float>(2));
test_move_and_assign(x, static_cast<double>(2));
test_move_and_assign(x, static_cast<long double>(2));
test_move_and_assign(x, x);
test_move_and_assign(x, "23");
}
int main()
{
@@ -131,6 +161,9 @@ int main()
d = std::move(e);
e = d;
BOOST_TEST(e == d);
test_move_and_assign<mpfr_float>();
test_move_and_assign<mpfr_float_50>();
}
#endif
#ifdef TEST_GMP
@@ -170,6 +203,9 @@ int main()
d = std::move(e);
e = d;
BOOST_TEST(e == d);
test_move_and_assign<mpf_float>();
test_move_and_assign<mpf_float_50>();
}
{
test_std_lib<mpz_int>();
@@ -194,6 +230,8 @@ int main()
d = std::move(e);
e = d;
BOOST_TEST(e == d);
test_move_and_assign<mpz_int>();
}
{
test_std_lib<mpq_rational>();
@@ -217,6 +255,8 @@ int main()
d = std::move(e);
e = d;
BOOST_TEST(e == d);
test_move_and_assign<mpq_rational>();
}
#endif
#ifdef TEST_TOMMATH
@@ -245,6 +285,8 @@ int main()
d = std::move(e);
e = d;
BOOST_TEST(e == d);
test_move_and_assign<tom_int>();
}
#endif
#ifdef TEST_CPP_INT
@@ -273,6 +315,9 @@ int main()
d = std::move(e);
e = d;
BOOST_TEST(e == d);
test_move_and_assign<cpp_int>();
test_move_and_assign<int512_t>();
}
#endif
return boost::report_errors();