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evmc
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cpp: Extend Host::call() unit test to show double free bug

This commit is contained in:
Paweł Bylica 2019-04-29 14:53:17 +02:00
parent 6987a50596
commit 489d832a5c
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GPG Key ID: 7A0C037434FE77EF
2 changed files with 29 additions and 3 deletions
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8
examples/example_host.cpp
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@ -94,10 +94,14 @@ public:
evmc::result call(const evmc_message& msg) noexcept final
{
(void)msg;
// TODO: Improve C++ API for result creation.
evmc_result res{};
res.status_code = EVMC_FAILURE;
res.status_code = EVMC_REVERT;
auto output = new uint8_t[msg.input_size];
std::copy(&msg.input_data[0], &msg.input_data[msg.input_size], output);
res.output_size = msg.input_size;
res.output_data = output;
res.release = [](const evmc_result* r) noexcept { delete[] r->output_data; };
return evmc::result{res};
}

24
test/unittests/test_cpp.cpp
View File

@ -87,7 +87,6 @@ TEST(cpp, host)
EXPECT_EQ(host.copy_code(a, 0, nullptr, 0), 0);
host.selfdestruct(a, a);
EXPECT_EQ(host.call({}).gas_left, 0);
auto tx = host.get_tx_context();
EXPECT_EQ(host.get_tx_context().block_number, tx.block_number);
@ -98,3 +97,26 @@ TEST(cpp, host)
example_host_destroy_context(host_context);
}
TEST(cpp, host_call)
{
// Use example host to test Host::call() method.
auto* host_context = example_host_create_context();
auto host = evmc::HostContext{host_context};
EXPECT_EQ(host.call({}).gas_left, 0);
auto msg = evmc_message{};
msg.gas = 1;
uint8_t input[] = {0xa, 0xb, 0xc};
msg.input_data = input;
msg.input_size = sizeof(input);
auto res = host.call(msg);
EXPECT_EQ(res.status_code, EVMC_REVERT);
EXPECT_EQ(res.output_size, msg.input_size);
EXPECT_TRUE(std::equal(&res.output_data[0], &res.output_data[res.output_size], msg.input_data));
example_host_destroy_context(host_context);
}