1 files changed, 20 insertions, 0 deletions
diff --git a/core/vm/stack_table.go b/core/vm/stack_table.go
new file mode 100644
index 000000000..ce4727a71
--- /dev/null
+++ b/core/vm/stack_table.go
@@ -0,0 +1,20 @@
+package vm
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/params"
+)
+
+func makeStackFunc(pop, push int) stackValidationFunc {
+	return func(stack *Stack) error {
+		if err := stack.require(pop); err != nil {
+			return err
+		}
+
+		if push > 0 && int64(stack.len()-pop+push) > params.StackLimit.Int64() {
+			return fmt.Errorf("stack limit reached %d (%d)", stack.len(), params.StackLimit.Int64())
+		}
+		return nil
+	}
+}