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防止内存越界

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This commit is contained in:
ziyue 2022-07-18 15:41:18 +08:00
parent d703ec29c6
commit b19574cea7
1 changed files with 3 additions and 3 deletions
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6
src/Rtmp/amf.cpp
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@ -480,10 +480,10 @@ double AMFDecoder::load<double>() {
if (pos + 8 > buf.size()) { if (pos + 8 > buf.size()) {
throw std::runtime_error("Not enough data"); throw std::runtime_error("Not enough data");
} }
uint64_t val = ((uint64_t) load_be32(&buf[pos]) << 32) uint64_t val = ((uint64_t) load_be32(&buf[pos]) << 32) | load_be32(&buf[pos + 4]);
| load_be32(&buf[pos + 4]);
double n = 0; double n = 0;
memcpy(&n, &val, 8); static_assert(sizeof(n) == sizeof(val), "sizeof(double) not eq sizeof(uint64_t)");
memcpy(&n, &val, sizeof(n));
pos += 8; pos += 8;
return n; return n;