Merge pull request #34 from ava-labs/devv0.3.0-rc.5

Dev

1 files changed, 22 insertions, 13 deletions

diff --git a/eth/tracers/tracer.go b/eth/tracers/tracer.go
index f2ef25d..524500d 100644
--- a/eth/tracers/tracer.go
+++ b/eth/tracers/tracer.go
@@ -26,10 +26,10 @@ import (
 	"unsafe"
 
 	"github.com/ava-labs/coreth/core/vm"
-	"github.com/ava-labs/go-ethereum/common"
-	"github.com/ava-labs/go-ethereum/common/hexutil"
-	"github.com/ava-labs/go-ethereum/crypto"
-	"github.com/ava-labs/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/log"
 	duktape "gopkg.in/olebedev/go-duktape.v3"
 )
 
@@ -93,18 +93,27 @@ type memoryWrapper struct {
 
 // slice returns the requested range of memory as a byte slice.
 func (mw *memoryWrapper) slice(begin, end int64) []byte {
+	if end == begin {
+		return []byte{}
+	}
+	if end < begin || begin < 0 {
+		// TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go
+		// runtime goes belly up https://github.com/golang/go/issues/15639.
+		log.Warn("Tracer accessed out of bound memory", "offset", begin, "end", end)
+		return nil
+	}
 	if mw.memory.Len() < int(end) {
 		// TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go
 		// runtime goes belly up https://github.com/golang/go/issues/15639.
 		log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", begin, "size", end-begin)
 		return nil
 	}
-	return mw.memory.Get(begin, end-begin)
+	return mw.memory.GetCopy(begin, end-begin)
 }
 
 // getUint returns the 32 bytes at the specified address interpreted as a uint.
 func (mw *memoryWrapper) getUint(addr int64) *big.Int {
-	if mw.memory.Len() < int(addr)+32 {
+	if mw.memory.Len() < int(addr)+32 || addr < 0 {
 		// TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go
 		// runtime goes belly up https://github.com/golang/go/issues/15639.
 		log.Warn("Tracer accessed out of bound memory", "available", mw.memory.Len(), "offset", addr, "size", 32)
@@ -147,13 +156,13 @@ type stackWrapper struct {
 
 // peek returns the nth-from-the-top element of the stack.
 func (sw *stackWrapper) peek(idx int) *big.Int {
-	if len(sw.stack.Data()) <= idx {
+	if len(sw.stack.Data()) <= idx || idx < 0 {
 		// TODO(karalabe): We can't js-throw from Go inside duktape inside Go. The Go
 		// runtime goes belly up https://github.com/golang/go/issues/15639.
 		log.Warn("Tracer accessed out of bound stack", "size", len(sw.stack.Data()), "index", idx)
 		return new(big.Int)
 	}
-	return sw.stack.Data()[len(sw.stack.Data())-idx-1]
+	return sw.stack.Back(idx).ToBig()
 }
 
 // pushObject assembles a JSVM object wrapping a swappable stack and pushes it
@@ -419,17 +428,17 @@ func New(code string) (*Tracer, error) {
 	tracer.tracerObject = 0 // yeah, nice, eval can't return the index itself
 
 	if !tracer.vm.GetPropString(tracer.tracerObject, "step") {
-		return nil, fmt.Errorf("Trace object must expose a function step()")
+		return nil, fmt.Errorf("trace object must expose a function step()")
 	}
 	tracer.vm.Pop()
 
 	if !tracer.vm.GetPropString(tracer.tracerObject, "fault") {
-		return nil, fmt.Errorf("Trace object must expose a function fault()")
+		return nil, fmt.Errorf("trace object must expose a function fault()")
 	}
 	tracer.vm.Pop()
 
 	if !tracer.vm.GetPropString(tracer.tracerObject, "result") {
-		return nil, fmt.Errorf("Trace object must expose a function result()")
+		return nil, fmt.Errorf("trace object must expose a function result()")
 	}
 	tracer.vm.Pop()
 
@@ -532,7 +541,7 @@ func (jst *Tracer) CaptureStart(from common.Address, to common.Address, create b
 }
 
 // CaptureState implements the Tracer interface to trace a single step of VM execution.
-func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error {
+func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, rStack *vm.ReturnStack, rdata []byte, contract *vm.Contract, depth int, err error) error {
 	if jst.err == nil {
 		// Initialize the context if it wasn't done yet
 		if !jst.inited {
@@ -571,7 +580,7 @@ func (jst *Tracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost
 
 // CaptureFault implements the Tracer interface to trace an execution fault
 // while running an opcode.
-func (jst *Tracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, contract *vm.Contract, depth int, err error) error {
+func (jst *Tracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, memory *vm.Memory, stack *vm.Stack, rStack *vm.ReturnStack, contract *vm.Contract, depth int, err error) error {
 	if jst.err == nil {
 		// Apart from the error, everything matches the previous invocation
 		jst.errorValue = new(string)