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Do not break type aliasing rule

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Amos Bird 2019-04-20 12:47:59 +08:00 • committed by John Preston
parent 55a6e70f74
commit e200a7d502
1 changed files with 4 additions and 2 deletions
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6
Telegram/SourceFiles/mtproto/core_types.h
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@ -608,11 +608,13 @@ public:
void read(const mtpPrime *&from, const mtpPrime *end, mtpTypeId cons = mtpc_double) {
if (from + 2 > end) throw mtpErrorInsufficient();
if (cons != mtpc_double) throw mtpErrorUnexpected(cons, "MTPdouble");
*(uint64*)(&v) = (uint64)(((uint32*)from)[0]) | ((uint64)(((uint32*)from)[1]) << 32);
auto nv = (uint64)(((uint32*)from)[0]) | ((uint64)(((uint32*)from)[1]) << 32);
std::memcpy(&v, &nv, sizeof(v));
from += 2;
}
void write(mtpBuffer &to) const {
uint64 iv = *(uint64*)(&v);
uint64 iv;
std::memcpy(&iv, &v, sizeof(v));
to.push_back((mtpPrime)(iv & 0xFFFFFFFFL));
to.push_back((mtpPrime)(iv >> 32));
}