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-rw-r--r--internal/ethapi/tracer.go3
1 files changed, 2 insertions, 1 deletions
diff --git a/internal/ethapi/tracer.go b/internal/ethapi/tracer.go
index 16ec6ebf0..c6d4f814e 100644
--- a/internal/ethapi/tracer.go
+++ b/internal/ethapi/tracer.go
@@ -278,7 +278,7 @@ func wrapError(context string, err error) error {
}
// CaptureState implements the Tracer interface to trace a single step of VM execution
-func (jst *JavascriptTracer) CaptureState(env vm.Environment, pc uint64, op vm.OpCode, gas, cost *big.Int, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) {
+func (jst *JavascriptTracer) CaptureState(env vm.Environment, pc uint64, op vm.OpCode, gas, cost *big.Int, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error {
if jst.err == nil {
jst.memory.memory = memory
jst.stack.stack = stack
@@ -301,6 +301,7 @@ func (jst *JavascriptTracer) CaptureState(env vm.Environment, pc uint64, op vm.O
jst.err = wrapError("step", err)
}
}
+ return nil
}
// GetResult calls the Javascript 'result' function and returns its value, or any accumulated error