Commit Graph

72 Commits

Author SHA1 Message Date
Devon Bear
4bfcc1ee5c
Convert *vm.EVM to vm.VMInterface in Tracers (#6590)
Useful for integration with external tools as one can just utilize an
interface opposed to having to import and build a real EVM object.
2023-01-16 22:28:50 +00:00
hexoscott
7dcbfbc283
reference hash, address, and chain config from lib (#6536) 2023-01-13 18:12:18 +00:00
ledgerwatch
387b4d7f35
Native tracers step 10 - remove duplicate SelfDestruct capture, clean up (#6440)
Moved some of the tracers to `eth/tracers/logger` to make it more
similar to go-ethereum.

Removed Erigon-specific `Capture-` functions

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro-2.local>
2022-12-26 04:56:39 +00:00
ledgerwatch
a49e287618
Native tracers step 6: Rename Tracer to EVMLogger, reduce args CaptureExit (#6410)
Getting closer to Geth's tracer interfaces

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro-2.local>
2022-12-23 05:43:08 +00:00
ledgerwatch
97c9a9108d
Native tracers - step 4 (#6363)
Remove `callType` argument from `CaptureStart`, and change `callType
vm.CallType` to `typ vm.OpCode` in `CaptureEnter` and move to the first
position (as it is in geth)

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro-2.local>
2022-12-19 03:12:08 +00:00
ledgerwatch
0761671607
Native tracers step 3 (#6362)
Remove `env` argument from all Capture functions except for
`CaptureStart`

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro-2.local>
2022-12-18 17:06:40 +00:00
ledgerwatch
b8c6a4d263
Native tracers - step 2 (#6360)
Splitting function `CaptureStart` into `CaptureStart` (when depth == 0)
and `CaptureEnter` (when depth > 0), while removing argument `depth`.
Same with splitting `CaptureEnd` into `CaptureEnd` and `CaptureExit`

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro-2.local>
2022-12-18 16:11:31 +00:00
ledgerwatch
3999c46046
Native tracers - step 1 (#6356)
In this first step, the new functions `CaptureTxStart` and
`CaptureTxEnd` are introduced to all tracers

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro-2.local>
2022-12-18 04:36:57 +00:00
Alex Sharov
0efda1f19f
trace: change type of self destruct arg to uint256 (#6189) 2022-12-03 21:43:53 +07:00
Alex Sharov
60cb4e2bbb
evm tracing interface to use uint256, to avoid value.ToBig() allocations (#5781) 2022-11-30 08:31:39 +07:00
Alex Sharov
52fd0d0e8b
Aggregator22.Unwind() (#5039)
* save

* save
2022-08-13 18:51:25 +07:00
sudeep
e13a318e0b
evm t8n to use ExecuteBlockEphemerally api (#4642)
* evm t8n tool to use ExecuteBlockEphemerally api (#4512)

* fix to set V, R, S in legacy transaction

* fix to dump post-execution alloc for evm t8n

* close tx in evm t8n

* populate current difficulty and gas used in output result

- update the ExecutionResult to include corresponding info (like
  Difficulty/GasUsed)

* initial attempt at migrating 'evm t8n' to use ExecuteBlockEphemerally

* using ExecutionResult in ExecuteBlockEphemerally

* bypass validations and integrate with EphemeralExecResult

* fixing output of 'evm t8n'

- remaining bits are "stateRoot" in results.txt and "balance" field for one account in
  alloc.txt (for testdata=1)

* get ExecuteBlockEphemerally to accept getTracer lambda

* fix build failure

* test cases for evm t8n

* more test cases for evm t8n

* fix stateRoot computation in evm t8n

* remove reward argument, as EBE itself takes care of it

* final cleanups for migration to using ExecuteBlockEphemerally

* change EBEforBSC to match EBE

* fix linter issues

* manually revert an unwanted diff

* avoid calculating ReceiptHash twice

* linter check

* minor correction

* remove unnecessary logic in EBEforBsc

* fix integration tests

* fix build
2022-07-07 12:47:00 +01:00
ledgerwatch
77dc35bb85
Revert "evm t8n tool to use ExecuteBlockEphemerally api (#4512)" (#4610)
* Revert "evm t8n tool to use ExecuteBlockEphemerally api (#4512)"

This reverts commit db93d2ea37.

* Fix compilation

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>
2022-07-02 23:24:20 +01:00
sudeep
db93d2ea37
evm t8n tool to use ExecuteBlockEphemerally api (#4512)
* fix to set V, R, S in legacy transaction

* fix to dump post-execution alloc for evm t8n

* close tx in evm t8n

* populate current difficulty and gas used in output result

- update the ExecutionResult to include corresponding info (like
  Difficulty/GasUsed)

* initial attempt at migrating 'evm t8n' to use ExecuteBlockEphemerally

* using ExecutionResult in ExecuteBlockEphemerally

* bypass validations and integrate with EphemeralExecResult

* fixing output of 'evm t8n'

- remaining bits are "stateRoot" in results.txt and "balance" field for one account in
  alloc.txt (for testdata=1)

* get ExecuteBlockEphemerally to accept getTracer lambda

* fix build failure

* test cases for evm t8n

* more test cases for evm t8n

* fix stateRoot computation in evm t8n

* remove reward argument, as EBE itself takes care of it

* final cleanups for migration to using ExecuteBlockEphemerally

* change EBEforBSC to match EBE

* fix linter issues

* manually revert an unwanted diff

* avoid calculating ReceiptHash twice

* linter check

* minor correction

* remove unnecessary logic in EBEforBsc
2022-07-02 06:52:23 +01:00
Frojdi Dymylja
499c27d2e1
change: port js tracer changes (#3128)
* change: expose callCtx as ScopeContext

* change: update tracer API

* change: logger API
update: jst tracer

* add: port jst tracer 2

* add: port jst tracer 3

* add: access list tracer

* chore: lint
2021-12-15 13:19:58 +00:00
Alexandr Borodulin
bbb3cc978f
Starknet getcode (#3038)
* deploy_cairo_smartcontract

* deploy_cairo_smartcontract / 2

Add new transaction type for cairo and vm factory

* starknet_getcode

* deploy_cairo_smartcontract / 3

* deploy_cairo_smartcontract / 4

* deploy_cairo_smartcontract / 5

Co-authored-by: Aleksandr Borodulin <a.borodulin@axioma.lv>
2021-12-06 14:58:53 +00:00
ledgerwatch
350d7fe7a9
Adding support for vmTrace into trace_ routines (#2497)
* VmTrace

* Fixes to gasCall, beginning of vmTrace

* Fix opcode tracer

* Add mem and store, enable vmTrace for all methods

* Fix lint

* More nuances and debugging|

* More fixes

* Fix for trace_callMany

* Fix for trace_callMany

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
2021-08-08 13:28:03 +01:00
Evgeny Danilenko
de26634d8d
TEVM status pruning (#2034)
* use trace for TEVM status

* restore testdata

* fix getting contract from plain state

* unwind

* linters

* reproducible build debug

* debug

* debug

* remove debug
2021-06-11 09:34:25 +01:00
Alex Sharov
0be3044b7e
rename (#1978)
* rename

* rename "make grpc"

* rename "abi bindings templates"

* rename "abi bindings templates"
2021-05-20 19:25:53 +01:00
ledgerwatch
59e5502744
Initial work on RPC streaming (#1880)
* Initial work on RPC streaming

* Create the stream and pass it on

* trace_filter expressed as streamable (not finished)

* Reenable call trace index

* Add new line

* Remove storage mode override

* Tool for overriding storage mode

* Diagnostics

* Make trace_filter more streamy

* Streaming debug_traceTransaction and debug_traceCall

* Fix test

* Log error on stream flush

* Enable streaming for http

* Flush the stream too

* Make trace_filter flush too

* Stop streaming if client is not interested

* Try to quiet annoying test|

* Revert "Try to quiet annoying test|"

This reverts commit 42849257bfa52e90140aa535af34b957cd97a222.

* Debug log for test

* Proceed with handshake regardless of whether peer notification worked

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>
2021-05-06 18:37:38 +01:00
Alexey Sharp
519b19f8aa Compilation fixes 2021-03-14 08:00:37 +00:00
Péter Szilágyi
d00a121246 core, eth: unship EIP 2315
# Conflicts:
#	core/vm/contract.go
#	core/vm/gen_structlog.go
#	core/vm/instructions.go
#	core/vm/instructions_test.go
#	core/vm/interpreter.go
#	core/vm/logger.go
#	core/vm/logger_json.go
#	core/vm/logger_test.go
#	core/vm/stack/stack.go
#	eth/tracers/tracer.go
#	eth/tracers/tracer_test.go
2021-03-12 16:05:37 +01:00
ledgerwatch
0953fd42cb
WIP trace_call implementation (#1399)
* trace_call initial

* Fix tests

* More tracing

* Add more fields to the action

* Completed first example query

* Add initial bench11 to compare trace_call with OpenEthereum

* Exclude precompile calls from call traces

* Add self-destruct, call types, more comparison in rpctest

* Support for execution errors

* Stack underflow error and delegatecall value

* Fix lint

* Fix suicide traceAddress, Bad instruction error

* Fix lint

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
2020-12-14 11:27:52 +00:00
Igor Mandrigin
5d98f8d40d post-rebase. fix imports 2020-12-03 17:37:38 +01:00
Martin Holst Swende
ca3d54a32c all: implement EIP-2929 (gas cost increases for state access opcodes) + yolo-v2 (#21509)
* core/vm, core/state: implement EIP-2929 + YOLOv2

* core/state, core/vm: fix some review concerns

* core/state, core/vm: address review concerns

* core/vm: address review concerns

* core/vm: better documentation

* core/vm: unify sload cost as fully dynamic

* core/vm: fix typo

* core/vm/runtime: fix compilation flaw

* core/vm/runtime: fix renaming-err leftovers

* core/vm: renaming

* params/config: use correct yolov2 chainid for config

* core, params: use a proper new genesis for yolov2

* core/state/tests: golinter nitpicks
# Conflicts:
#	cmd/evm/internal/t8ntool/execution.go
#	cmd/geth/chaincmd.go
#	cmd/geth/consolecmd.go
#	cmd/geth/main.go
#	cmd/geth/usage.go
#	cmd/utils/flags.go
#	core/state/statedb.go
#	core/state/statedb_test.go
#	core/vm/evm.go
#	core/vm/interpreter.go
#	core/vm/logger.go
#	core/vm/runtime/runtime.go
#	eth/api_tracer.go
2020-12-03 17:37:38 +01:00
Marius van der Wijden
f68ac9d1c3 core/vm: marshall returnData as hexstring in trace logs (#21715)
* core/vm: marshall returnData as hexstring in trace logs

* core/vm: marshall returnData as hexstring in trace logs
# Conflicts:
#	core/vm/gen_structlog.go
2020-12-03 17:37:38 +01:00
Igor Mandrigin
0f1b2f3595 geth-1.9.23: post-rebase fixups 2020-10-26 17:16:00 +01:00
Guillaume Ballet
6ae9473675 core/vm: dedup config check in markdown logger (#21655)
* core/vm: dedup config check

* review feedback: reuse buffer
# Conflicts:
#	core/vm/logger.go
2020-10-26 17:16:00 +01:00
Igor Mandrigin
8600616c3d geth 1.9.18 post-rebase fixups 2020-08-08 17:33:35 +02:00
Martin Holst Swende
a4b70f9ee9 core/vm: less allocations for various call variants (#21222)
* core/vm/runtime/tests: add more benchmarks

* core/vm: initial work on improving alloc count for calls to precompiles

name                                  old time/op    new time/op    delta
SimpleLoop/identity-precompile-10M-6     117ms ±75%      43ms ± 1%  -63.09%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   79.6ms ± 4%    70.5ms ± 1%  -11.42%  (p=0.008 n=5+5)

name                                  old alloc/op   new alloc/op   delta
SimpleLoop/identity-precompile-10M-6    24.4MB ± 0%     4.9MB ± 0%  -79.94%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   13.2kB ± 0%    13.2kB ± 0%     ~     (p=0.357 n=5+5)

name                                  old allocs/op  new allocs/op  delta
SimpleLoop/identity-precompile-10M-6      382k ± 0%      153k ± 0%  -59.99%  (p=0.000 n=5+4)
SimpleLoop/loop-10M-6                     40.0 ± 0%      40.0 ± 0%     ~     (all equal)

* core/vm: don't allocate big.int for touch

name                                  old time/op    new time/op    delta
SimpleLoop/identity-precompile-10M-6    43.3ms ± 1%    42.4ms ± 7%     ~     (p=0.151 n=5+5)
SimpleLoop/loop-10M-6                   70.5ms ± 1%    76.7ms ± 1%   +8.67%  (p=0.008 n=5+5)

name                                  old alloc/op   new alloc/op   delta
SimpleLoop/identity-precompile-10M-6    4.90MB ± 0%    2.46MB ± 0%  -49.83%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   13.2kB ± 0%    13.2kB ± 1%     ~     (p=0.571 n=5+5)

name                                  old allocs/op  new allocs/op  delta
SimpleLoop/identity-precompile-10M-6      153k ± 0%       76k ± 0%  -49.98%  (p=0.029 n=4+4)
SimpleLoop/loop-10M-6                     40.0 ± 0%      40.0 ± 0%     ~     (all equal)

* core/vm: reduce allocs in staticcall

name                                  old time/op    new time/op    delta
SimpleLoop/identity-precompile-10M-6    42.4ms ± 7%    37.5ms ± 6%  -11.68%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   76.7ms ± 1%    69.1ms ± 1%   -9.82%  (p=0.008 n=5+5)

name                                  old alloc/op   new alloc/op   delta
SimpleLoop/identity-precompile-10M-6    2.46MB ± 0%    0.02MB ± 0%  -99.35%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   13.2kB ± 1%    13.2kB ± 0%     ~     (p=0.143 n=5+5)

name                                  old allocs/op  new allocs/op  delta
SimpleLoop/identity-precompile-10M-6     76.4k ± 0%      0.1k ± 0%     ~     (p=0.079 n=4+5)
SimpleLoop/loop-10M-6                     40.0 ± 0%      40.0 ± 0%     ~     (all equal)

* trie: better use of hasher keccakState

* core/state/statedb: reduce allocations in getDeletedStateObject

* core/vm: reduce allocations in all call derivates

* core/vm: reduce allocations in call variants

- Make returnstack `uint32`
- Use a `sync.Pool` of `stack`s

* core/vm: fix tests

* core/vm: goimports

* core/vm: tracer fix + staticcall gas fix

* core/vm: add back snapshot to staticcall

* core/vm: review concerns + make returnstack pooled + enable returndata in traces

* core/vm: fix some test tracer method signatures

* core/vm: run gencodec, minor comment polish

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
# Conflicts:
#	core/state/statedb.go
#	core/vm/contracts_test.go
#	core/vm/evm.go
#	core/vm/instructions.go
#	core/vm/interpreter.go
#	core/vm/logger.go
#	core/vm/logger_json.go
#	core/vm/logger_test.go
#	core/vm/runtime/runtime_test.go
#	core/vm/stack/stack.go
#	eth/tracers/tracer.go
#	eth/tracers/tracer_test.go
#	trie/secure_trie.go
2020-08-07 13:46:26 +02:00
gary rong
f5b6ae0da1 core, eth, internal: include read storage entries in structlog output (#21204)
* core, eth, internal: extend structLog tracer

* core/vm, internal: add storage view

* core, internal: add slots to storage directly

* core: remove useless

* core: address martin's comment

* core/vm: fix tests
# Conflicts:
#	core/vm/logger.go
#	core/vm/logger_test.go
2020-08-07 11:17:27 +02:00
Paweł Bylica
924c03abf9 core/vm: use uint256 in EVM implementation (#20787)
* core/vm: use fixed uint256 library instead of big

* core/vm: remove intpools

* core/vm: upgrade uint256, fixes uint256.NewFromBig

* core/vm: use uint256.Int by value in Stack

* core/vm: upgrade uint256 to v1.0.0

* core/vm: don't preallocate space for 1024 stack items (only 16)

Co-authored-by: Martin Holst Swende <martin@swende.se>
# Conflicts:
#	core/vm/common.go
#	core/vm/contract.go
#	core/vm/eips.go
#	core/vm/evm.go
#	core/vm/gas_table.go
#	core/vm/instructions.go
#	core/vm/instructions_test.go
#	core/vm/interpreter.go
#	core/vm/logger.go
#	core/vm/logger_json.go
#	core/vm/logger_test.go
#	core/vm/stack/stack.go
#	go.mod
#	go.sum
2020-08-07 11:04:19 +02:00
Igor Mandrigin
93f6c4c01a post-rebase fixups 2020-06-15 19:38:54 +03:00
Greg Colvin
57e88afcd4 core/vm: EIP-2315, JUMPSUB for the EVM (#20619)
* core/vm: implement EIP 2315, subroutines for the EVM

* core/vm: eip 2315 - lintfix + check jump dest validity + check ret stack size constraints

  logger: markdown-friendly traces, validate jumpdest, more testcase, correct opcodes

* core/vm: update subroutines acc to eip: disallow walk-into

* core/vm/eips: gas cost changes for subroutines

* core/vm: update opcodes for EIP-2315

* core/vm: define RETURNSUB as a 'jumping' operation + review concerns

Co-authored-by: Martin Holst Swende <martin@swende.se>
# Conflicts:
#	core/vm/contract.go
#	core/vm/instructions_test.go
#	core/vm/interpreter.go
#	core/vm/logger.go
#	core/vm/logger_json.go
#	core/vm/logger_test.go
#	core/vm/runtime/runtime_test.go
#	eth/tracers/tracer.go
2020-06-15 19:38:13 +03:00
Evgeny Danilenko
8d7e603f07
stack pool (#627) 2020-06-05 17:45:56 +03:00
gary rong
ad9e4241b1 all: seperate consensus error and evm internal error (#20830)
* all: seperate consensus error and evm internal error

There are actually two types of error will be returned when
a tranaction/message call is executed: (a) consensus error
(b) evm internal error. The former should be converted to
a consensus issue, e.g. The sender doesn't enough asset to
purchase the gas it specifies. The latter is allowed since
evm itself is a blackbox and internal error is allowed to happen.

This PR emphasizes the difference by introducing a executionResult
structure. The evm error is embedded inside. So if any error
returned, it indicates consensus issue happens.

And also this PR improve the `EstimateGas` API to return the concrete
revert reason if the transaction always fails

* all: polish

* accounts/abi/bind/backends: add tests

* accounts/abi/bind/backends, internal: cleanup error message

* all: address comments

* core: fix lint

* accounts, core, eth, internal: address comments

* accounts, internal: resolve revert reason if possible

* accounts, internal: address comments
# Conflicts:
#	accounts/abi/abi.go
#	accounts/abi/bind/backends/simulated.go
#	cmd/geth/retesteth.go
#	core/state/snapshot/difflayer_test.go
#	core/state/snapshot/disklayer_test.go
#	core/state/snapshot/iterator_test.go
#	core/state_processor.go
#	core/state_transition.go
#	core/vm/evm.go
#	core/vm/instructions.go
#	core/vm/jump_table.go
#	eth/api_tracer.go
#	internal/ethapi/api.go
#	les/odr_test.go
#	light/odr_test.go
#	tests/state_test_util.go
2020-05-20 15:26:22 +03:00
Andrew Ashikhmin
5bc45f2426
Use uint256 in EVM implementation (kudos to Pawel Bylica) (#551)
* core/vm: improve jumpdest lookup

* Use uint256 in EVM implementation (kudos to Pawel Bylica)

* Safety precaution in opMulmod

Co-authored-by: Martin Holst Swende <martin@swende.se>
2020-05-18 08:10:59 +01:00
nebojsa94
7b91786136 core/vm: fix tracer interface parameter name (#20294) 2019-12-03 13:32:21 +01:00
Alexey Akhunov
fe01bccbb8 Apply Turbo-Geth modifications to go-ethereum codebase 2019-11-01 21:52:03 +01:00
hydai
9b3601cfce core/vm: fix typos in comments (#19391) 2019-04-04 12:30:10 +02:00
Martin Holst Swende
4c0883e20d core/vm: adds refund as part of the json standard trace (#17910)
This adds the global accumulated refund counter to the standard
json output as a numeric json value. Previously this was not very
interesting since it was not used much, but with the new sstore
gas changes the value is a lot more interesting from a consensus
investigation perspective.
2018-10-23 16:28:18 +02:00
Guillaume Ballet
598f786aab core/vm: clear linter warnings (#17057)
* core/vm: clear linter warnings

* core/vm: review input

* core/vm.go: revert lint in noop as per request
2018-06-26 15:56:25 +03:00
kiel barry
a7720b5926 core: golint updates for this or self warning (#16633) 2018-05-02 11:27:59 +03:00
dm4
3ebcf92b42 cmd/evm: print vm output when debug flag is on (#16326) 2018-04-06 12:43:36 +02:00
Felix Lange
5c2f1e0014 all: update generated code (#15808)
* core/types, core/vm, eth, tests: regenerate gencodec files

* Makefile: update devtools target

Install protoc-gen-go and print reminders about npm, solc and protoc.
Also switch to github.com/kevinburke/go-bindata because it's more
maintained.

* contracts/ens: update contracts and regenerate with solidity v0.4.19

The newer upstream version of the FIFSRegistrar contract doesn't set the
resolver anymore. The resolver is now deployed separately.

* contracts/release: regenerate with solidity v0.4.19

* contracts/chequebook: fix fallback and regenerate with solidity v0.4.19

The contract didn't have a fallback function, payments would be rejected
when compiled with newer solidity. References to 'mortal' and 'owned'
use the local file system so we can compile without network access.

* p2p/discv5: regenerate with recent stringer

* cmd/faucet: regenerate

* dashboard: regenerate

* eth/tracers: regenerate

* internal/jsre/deps: regenerate

* dashboard: avoid sed -i because it's not portable

* accounts/usbwallet/internal/trezor: fix go generate warnings
2018-01-08 14:15:57 +02:00
Felix Lange
1c2378b926
tests: update to upstream commit 2bb0c3da3b (#15806)
Also raise traceLimit once again and print the VM
error and output on failure.
2018-01-04 13:18:30 +01:00
Péter Szilágyi
5258785c81
cmd, core, eth/tracers: support fancier js tracing (#15516)
* cmd, core, eth/tracers: support fancier js tracing

* eth, internal/web3ext: rework trace API, concurrency, chain tracing

* eth/tracers: add three more JavaScript tracers

* eth/tracers, vendor: swap ottovm to duktape for tracing

* core, eth, internal: finalize call tracer and needed extras

* eth, tests: prestate tracer, call test suite, rewinding

* vendor: fix windows builds for tracer js engine

* vendor: temporary duktape fix

* eth/tracers: fix up 4byte and evmdis tracer

* vendor: pull in latest duktape with my upstream fixes

* eth: fix some review comments

* eth: rename rewind to reexec to make it more obvious

* core/vm: terminate tracing using defers
2017-12-21 13:56:11 +02:00
Péter Szilágyi
b0190189a3
core/vm, internal/ethapi: tracer no full storage, nicer json output (#15499)
* core/vm, internal/ethapi: tracer no full storage, nicer json output

* core/vm, internal/ethapi: omit disabled trace fields
2017-11-16 18:53:18 +02:00
Péter Szilágyi
b872961ec8
consensus, core, tests: implement Metropolis EIP 649 2017-08-24 17:16:39 +03:00
Martin Holst Swende
286ec5df40 cmd/evm, core/vm, internal/ethapi: Show error when exiting (#14985)
* cmd/evm, core/vm, internal/ethapi: Add 'err' to tracer interface CaptureEnd

* cmd/evm: fix nullpointer when there is no error
2017-08-23 14:37:18 +03:00