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Merge pull request #2741 from joakim-hove/add-const-cast

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Use const_cast< > in variant serialization
This commit is contained in:
Joakim Hove
2020-08-27 15:22:19 +02:00
committed by GitHub
parent 70805ca1d4 3c565ef59e
commit ef4af80821
1 changed files with 4 additions and 3 deletions
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7
ebos/eclmpiserializer.hh
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@@ -159,7 +159,7 @@ public:
*/
template<class T0, class T1>
void variant(std::variant<T0,T1>& data)
void variant(const std::variant<T0,T1>& data)
{
auto pack_size = [&](auto& d) {
m_packSize += Mpi::packSize(d, m_comm);
@@ -177,16 +177,17 @@ public:
std::visit([&](auto& arg) { pack(arg); }, data);
} else if (m_op == Operation::UNPACK) {
size_t index;
std::variant<T0,T1>& mutable_data = const_cast<std::variant<T0,T1>&>(data);
Mpi::unpack(index, m_buffer, m_position, m_comm);
if (index == 0) {
T0 t0;
Mpi::unpack(t0, m_buffer, m_position, m_comm);
data = t0;
mutable_data = t0;
} else if (index == 1) {
T1 t1;
Mpi::unpack(t1, m_buffer, m_position, m_comm);
data = t1;
mutable_data = t1;
} else
throw std::logic_error("Internal meltdown in std::variant<T0,T1> unpack loaded index=" + std::to_string(index) + " allowed range: [0,1]");
}