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| author | wmin0 <wmin0@cobinhood.com> | 2019-04-08 16:55:48 +0800 |
|---|---|---|
| committer | Jhih-Ming Huang <jm.huang@cobinhood.com> | 2019-05-06 10:44:04 +0800 |
| commit | 34df61db58fcf9c9eb02d20fc9d2f05249c47418 (patch) | |
| tree | 6e61a27ff5a6a95629905fe6510bfa241d919796 | |
| parent | 400f81ab9892fd7669c54967c7a64470ae5ae7d5 (diff) | |
| download | dexon-34df61db58fcf9c9eb02d20fc9d2f05249c47418.tar.gz dexon-34df61db58fcf9c9eb02d20fc9d2f05249c47418.tar.zst dexon-34df61db58fcf9c9eb02d20fc9d2f05249c47418.zip | |
core: vm: sqlvm: ast: copy data before decimal decode
Because decimalDecode modifies input data, we should make a copy first
to prevent side effect.
| -rw-r--r-- | core/vm/sqlvm/ast/types.go | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/core/vm/sqlvm/ast/types.go b/core/vm/sqlvm/ast/types.go index 7d29a5c49..9bb48bc65 100644 --- a/core/vm/sqlvm/ast/types.go +++ b/core/vm/sqlvm/ast/types.go @@ -337,6 +337,8 @@ func decimalEncode(size int, d decimal.Decimal) []byte { func decimalDecode(signed bool, bs []byte) decimal.Decimal { neg := false if signed && (bs[0]&0x80 != 0) { + newbs := make([]byte, 0, len(bs)) + bs = append(newbs, bs...) neg = true for idx := range bs { bs[idx] = ^bs[idx] |