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Check FRESH validity in CCoinsViewCache::BatchWrite

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This commit is contained in:
Russell Yanofsky 2016-12-09 12:28:22 -05:00
parent 7dac1e5e9e
commit dd44ea39bb
2 changed files with 24 additions and 11 deletions
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7
src/coins.cpp
View File

@ -207,6 +207,13 @@ bool CCoinsViewCache::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlockIn
entry.flags |= CCoinsCacheEntry::FRESH;
}
} else {
// Assert that the child cache entry was not marked FRESH if the
// parent cache entry has unspent outputs. If this ever happens,
// it means the FRESH flag was misapplied and there is a logic
// error in the calling code.
if ((it->second.flags & CCoinsCacheEntry::FRESH) && !itUs->second.coins.IsPruned())
throw std::logic_error("FRESH flag misapplied to cache entry for base transaction with spendable outputs");
// Found the entry in the parent cache
if ((itUs->second.flags & CCoinsCacheEntry::FRESH) && it->second.coins.IsPruned()) {
// The grandparent does not have an entry, and the child is

28
src/test/coins_tests.cpp
View File

@ -791,12 +791,18 @@ BOOST_AUTO_TEST_CASE(ccoins_modify_new)
void CheckWriteCoins(CAmount parent_value, CAmount child_value, CAmount expected_value, char parent_flags, char child_flags, char expected_flags)
{
SingleEntryCacheTest test(ABSENT, parent_value, parent_flags);
WriteCoinsViewEntry(test.cache, child_value, child_flags);
test.cache.SelfTest();
CAmount result_value;
char result_flags;
GetCoinsMapEntry(test.cache.map(), result_value, result_flags);
try {
WriteCoinsViewEntry(test.cache, child_value, child_flags);
test.cache.SelfTest();
GetCoinsMapEntry(test.cache.map(), result_value, result_flags);
} catch (std::logic_error& e) {
result_value = FAIL;
result_flags = NO_ENTRY;
}
BOOST_CHECK_EQUAL(result_value, expected_value);
BOOST_CHECK_EQUAL(result_flags, expected_flags);
}
@ -840,21 +846,21 @@ BOOST_AUTO_TEST_CASE(ccoins_write)
CheckWriteCoins(VALUE1, ABSENT, VALUE1, DIRTY , NO_ENTRY , DIRTY );
CheckWriteCoins(VALUE1, ABSENT, VALUE1, DIRTY|FRESH, NO_ENTRY , DIRTY|FRESH);
CheckWriteCoins(VALUE1, PRUNED, PRUNED, 0 , DIRTY , DIRTY );
CheckWriteCoins(VALUE1, PRUNED, PRUNED, 0 , DIRTY|FRESH, DIRTY );
CheckWriteCoins(VALUE1, PRUNED, FAIL , 0 , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, ABSENT, FRESH , DIRTY , NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, ABSENT, FRESH , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, FAIL , FRESH , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, PRUNED, DIRTY , DIRTY , DIRTY );
CheckWriteCoins(VALUE1, PRUNED, PRUNED, DIRTY , DIRTY|FRESH, DIRTY );
CheckWriteCoins(VALUE1, PRUNED, FAIL , DIRTY , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, ABSENT, DIRTY|FRESH, DIRTY , NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, ABSENT, DIRTY|FRESH, DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, PRUNED, FAIL , DIRTY|FRESH, DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, VALUE2, VALUE2, 0 , DIRTY , DIRTY );
CheckWriteCoins(VALUE1, VALUE2, VALUE2, 0 , DIRTY|FRESH, DIRTY );
CheckWriteCoins(VALUE1, VALUE2, FAIL , 0 , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, VALUE2, VALUE2, FRESH , DIRTY , DIRTY|FRESH);
CheckWriteCoins(VALUE1, VALUE2, VALUE2, FRESH , DIRTY|FRESH, DIRTY|FRESH);
CheckWriteCoins(VALUE1, VALUE2, FAIL , FRESH , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, VALUE2, VALUE2, DIRTY , DIRTY , DIRTY );
CheckWriteCoins(VALUE1, VALUE2, VALUE2, DIRTY , DIRTY|FRESH, DIRTY );
CheckWriteCoins(VALUE1, VALUE2, FAIL , DIRTY , DIRTY|FRESH, NO_ENTRY );
CheckWriteCoins(VALUE1, VALUE2, VALUE2, DIRTY|FRESH, DIRTY , DIRTY|FRESH);
CheckWriteCoins(VALUE1, VALUE2, VALUE2, DIRTY|FRESH, DIRTY|FRESH, DIRTY|FRESH);
CheckWriteCoins(VALUE1, VALUE2, FAIL , DIRTY|FRESH, DIRTY|FRESH, NO_ENTRY );
// The checks above omit cases where the child flags are not DIRTY, since
// they would be too repetitive (the parent cache is never updated in these