Calling `eth_getTransactionByHash` with `rpc` cheatcode failed

[bluele]

Component

Forge

Have you ensured that all of these are up to date?

• [X] Foundry
• [X] Foundryup

What version of Foundry are you on?

forge 0.2.0 (aa333c6 2024-05-05T00:18:50.527833809Z)

What command(s) is the bug in?

forge test

Operating System

Linux

Describe the bug

When I call eth_getTransactionByHash with rpc cheatcode, always got an error [Revert] panic: memory allocation error (0x41).

A minimal reproducible example is the following:

pragma solidity ^0.8.13;

import {Test, console} from "forge-std/Test.sol";

contract RPCTest is Test {
    function test_fail_rpc_transactionByHash() public {
        string memory res = getTransactionByHash();
        console.log(res);
    }

    // https://sepolia.etherscan.io/tx/0xe1a0fba63292976050b2fbf4379a1901691355ed138784b4e0d1854b4cf9193e
    function getTransactionByHash() internal returns (string memory) {
        string memory param = string.concat('["0xe1a0fba63292976050b2fbf4379a1901691355ed138784b4e0d1854b4cf9193e"]');
        bytes memory res = vm.rpc("eth_getTransactionByHash", param);
        return string(res);
    } 
}

The execution result of forge test is the following:

$ forge test -vvvv --rpc-url https://ethereum-sepolia-archive.allthatnode.com --match-test test_fail
[⠊] Compiling...
No files changed, compilation skipped

Ran 1 test for test/RPC.t.sol:RPCTest
[FAIL. Reason: panic: memory allocation error (0x41)] test_fail_rpc_transactionByHash() (gas: 4020)
Traces:
  [4020] RPCTest::test_fail_rpc_transactionByHash()
    ├─ [0] VM::rpc("eth_getTransactionByHash", "[\"0xe1a0fba63292976050b2fbf4379a1901691355ed138784b4e0d1854b4cf9193e\"]")
    │   └─ ← [Return] 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
    └─ ← [Revert] panic: memory allocation error (0x41)

Suite result: FAILED. 0 passed; 1 failed; 0 skipped; finished in 944.69ms (230.48ms CPU time)

Ran 1 test suite in 1.53s (944.69ms CPU time): 0 tests passed, 1 failed, 0 skipped (1 total tests)

Failing tests:
Encountered 1 failing test in test/RPC.t.sol:RPCTest
[FAIL. Reason: panic: memory allocation error (0x41)] test_fail_rpc_transactionByHash() (gas: 4020)

Encountered a total of 1 failing tests, 0 tests succeeded

The forge config is

[profile.default]
src = "src"
test = "test"
script = "script"
out = "out"
libs = ["lib"]
remappings = ["forge-std/=lib/forge-std/src/"]
auto_detect_remappings = true
libraries = []
cache = true
cache_path = "cache"
broadcast = "broadcast"
allow_paths = []
include_paths = []
force = false
evm_version = "paris"
gas_reports = ["*"]
gas_reports_ignore = []
auto_detect_solc = true
offline = false
optimizer = true
optimizer_runs = 200
verbosity = 0
ignored_error_codes = [
    "license",
    "code-size",
    "init-code-size",
    "transient-storage",
]
ignored_warnings_from = []
deny_warnings = false
disable_block_gas_limit = false
isolate = false
ffi = false
always_use_create_2_factory = false
prompt_timeout = 120
sender = "0x1804c8ab1f12e6bbf3894d4083f33e07309d1f38"
tx_origin = "0x1804c8ab1f12e6bbf3894d4083f33e07309d1f38"
initial_balance = "0xffffffffffffffffffffffff"
block_number = 1
gas_limit = 9223372036854775807
block_base_fee_per_gas = 0
block_coinbase = "0x0000000000000000000000000000000000000000"
block_timestamp = 1
block_difficulty = 0
block_prevrandao = "0x0000000000000000000000000000000000000000000000000000000000000000"
memory_limit = 134217728
extra_output = []
extra_output_files = []
names = false
sizes = false
via_ir = false
ast = false
no_storage_caching = false
no_rpc_rate_limit = false
use_literal_content = false
bytecode_hash = "ipfs"
cbor_metadata = true
sparse_mode = false
build_info = false
unchecked_cheatcode_artifacts = false
cancun = false

[[profile.default.fs_permissions]]
access = "read"
path = "out"

[profile.default.rpc_storage_caching]
chains = "all"
endpoints = "all"

[fmt]
line_length = 120
tab_width = 4
bracket_spacing = false
int_types = "long"
multiline_func_header = "attributes_first"
quote_style = "double"
number_underscore = "preserve"
hex_underscore = "remove"
single_line_statement_blocks = "preserve"
override_spacing = false
wrap_comments = false
ignore = []
contract_new_lines = false
sort_imports = false

[doc]
out = "docs"
title = ""
book = "book.toml"
homepage = "README.md"
ignore = []

[fuzz]
runs = 256
max_test_rejects = 65536
dictionary_weight = 40
include_storage = true
include_push_bytes = true
max_fuzz_dictionary_addresses = 15728640
max_fuzz_dictionary_values = 6553600
gas_report_samples = 256
failure_persist_dir = "cache/fuzz"
failure_persist_file = "failures"

[invariant]
runs = 256
depth = 15
fail_on_revert = false
call_override = false
dictionary_weight = 80
include_storage = true
include_push_bytes = true
max_fuzz_dictionary_addresses = 15728640
max_fuzz_dictionary_values = 6553600
shrink_sequence = true
shrink_run_limit = 262144
preserve_state = false
max_assume_rejects = 65536
gas_report_samples = 256

[labels]

[mattsse]

@DaniPopes It looks like this is due to encoded objects which results in a reverted call

https://github.com/foundry-rs/foundry/blob/2e9b584705ed91c5cb02ce3e4810062bed5c496d/crates/cheatcodes/src/evm/fork.rs#L231-L239

should we return to_string here?