diff options
Diffstat (limited to 'vm/stack.go')
| -rw-r--r-- | vm/stack.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/vm/stack.go b/vm/stack.go index 6091479cb..b9eaa10cd 100644 --- a/vm/stack.go +++ b/vm/stack.go @@ -91,6 +91,12 @@ func (st *Stack) Get(amount *big.Int) []*big.Int { return nil } +func (st *Stack) require(n int) { + if st.Len() < n { + panic(fmt.Sprintf("stack underflow (%d <=> %d)", st.Len(), n)) + } +} + func (st *Stack) Print() { fmt.Println("### stack ###") if len(st.data) > 0 { |