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fixed undefined behavior

This commit is contained in:
jsteemann 2016-04-29 16:45:12 +02:00
parent c47420b256
commit 6f21b59b75
1 changed files with 6 additions and 4 deletions
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10
arangod/Aql/QueryCache.cpp
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@ -210,9 +210,10 @@ void QueryCacheDatabaseEntry::store (uint64_t hash,
// remove previous entry // remove previous entry
auto it = _entriesByHash.find(hash); auto it = _entriesByHash.find(hash);
TRI_ASSERT(it != _entriesByHash.end()); TRI_ASSERT(it != _entriesByHash.end());
unlink((*it).second); auto previous = (*it).second;
unlink(previous);
_entriesByHash.erase(it); _entriesByHash.erase(it);
tryDelete((*it).second); tryDelete(previous);
// and insert again // and insert again
_entriesByHash.emplace(hash, entry); _entriesByHash.emplace(hash, entry);
@ -247,9 +248,10 @@ void QueryCacheDatabaseEntry::store (uint64_t hash,
// finally remove entry itself from hash table // finally remove entry itself from hash table
auto it = _entriesByHash.find(hash); auto it = _entriesByHash.find(hash);
TRI_ASSERT(it != _entriesByHash.end()); TRI_ASSERT(it != _entriesByHash.end());
auto previous = (*it).second;
_entriesByHash.erase(it); _entriesByHash.erase(it);
unlink((*it).second); unlink(previous);
tryDelete((*it).second); tryDelete(previous);
throw; throw;
} }