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walletdb: Consistently clear key and value streams before writing

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Before writing data to the output key and value streams, make sure they
are cleared.
This commit is contained in:
Andrew Chow 2023-05-15 15:50:35 -04:00
parent 71300489af
commit 84b2f353bb
3 changed files with 8 additions and 0 deletions
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4
src/wallet/sqlite.cpp
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@ -409,6 +409,7 @@ bool SQLiteBatch::ReadKey(DataStream&& key, DataStream& value)
// Leftmost column in result is index 0
const std::byte* data{AsBytePtr(sqlite3_column_blob(m_read_stmt, 0))};
size_t data_size(sqlite3_column_bytes(m_read_stmt, 0));
value.clear();
value.write({data, data_size});
sqlite3_clear_bindings(m_read_stmt);
@ -495,6 +496,9 @@ DatabaseCursor::Status SQLiteCursor::Next(DataStream& key, DataStream& value)
return Status::FAIL;
}
key.clear();
value.clear();
// Leftmost column in result is index 0
const std::byte* key_data{AsBytePtr(sqlite3_column_blob(m_cursor_stmt, 0))};
size_t key_data_size(sqlite3_column_bytes(m_cursor_stmt, 0));