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Merge pull request #2253 from elsid/fix_navmesh_tiles_cache_ub

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Do not pass nullptr to std::memcmp
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Bret Curtis 2019-03-14 21:45:52 +01:00 committed by GitHub
commit 7bbf0b5249
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1 changed files with 11 additions and 0 deletions
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11
components/detournavigator/navmeshtilescache.cpp
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@ -179,6 +179,17 @@ namespace DetourNavigator
const auto lhsEnd = reinterpret_cast<const char*>(lhs.data() + lhs.size()); const auto lhsEnd = reinterpret_cast<const char*>(lhs.data() + lhs.size());
const auto lhsSize = static_cast<std::ptrdiff_t>(lhsEnd - lhsBegin); const auto lhsSize = static_cast<std::ptrdiff_t>(lhsEnd - lhsBegin);
const auto rhsSize = static_cast<std::ptrdiff_t>(mRhsEnd - mRhsIt); const auto rhsSize = static_cast<std::ptrdiff_t>(mRhsEnd - mRhsIt);
if (lhsBegin == nullptr || mRhsIt == nullptr)
{
if (lhsSize < rhsSize)
return -1;
else if (lhsSize > rhsSize)
return 1;
else
return 0;
}
const auto size = std::min(lhsSize, rhsSize); const auto size = std::min(lhsSize, rhsSize);
if (const auto result = std::memcmp(lhsBegin, mRhsIt, size)) if (const auto result = std::memcmp(lhsBegin, mRhsIt, size))