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eof_validation_stack_test.cpp
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// evmone: Fast Ethereum Virtual Machine implementation
// Copyright 2024 The evmone Authors.
// SPDX-License-Identifier: Apache-2.0
#include "eof_validation.hpp"
#include <evmone/eof.hpp>
#include <evmone/instructions_traits.hpp>
#include <gtest/gtest.h>
#include <test/utils/bytecode.hpp>
using namespace evmone;
using namespace evmone::test;
namespace
{
// code prologue that creates a segment starting with possible stack heights 1 and 3
const auto varstack = push0() + rjumpi(2, 0) + push0() + push0();
} // namespace
TEST_F(eof_validation, unreachable_instructions)
{
add_test_case(
eof_bytecode(bytecode{OP_STOP} + OP_STOP), EOFValidationError::unreachable_instructions);
add_test_case(
eof_bytecode(rjump(1) + OP_STOP + OP_STOP), EOFValidationError::unreachable_instructions);
// STOP reachable only via backwards jump - invalid
add_test_case(
eof_bytecode(rjump(1) + OP_STOP + rjump(-4)), EOFValidationError::unreachable_instructions);
}
TEST_F(eof_validation, no_terminating_instruction)
{
add_test_case(eof_bytecode(push0()), EOFValidationError::no_terminating_instruction);
add_test_case(eof_bytecode(add(1, 2)), EOFValidationError::no_terminating_instruction);
add_test_case(eof_bytecode(rjumpi(-5, 1)), EOFValidationError::no_terminating_instruction);
}
TEST_F(eof_validation, non_constant_stack_height)
{
// Final "OP_PUSH0 + OP_PUSH0 + OP_REVERT" can be reached with stack heights: 0, 2 or 1
add_test_case(eof_bytecode(rjumpi(7, OP_PUSH0) + OP_PUSH0 + OP_PUSH0 + rjumpi(1, OP_PUSH0) +
OP_POP + OP_PUSH0 + OP_PUSH0 + OP_REVERT,
4),
EOFValidationError::success);
// Final "OP_POP + OP_PUSH0 + OP_PUSH0 + OP_REVERT" can be reached with stack heights: 1, 3 or 2
add_test_case(eof_bytecode(push0() + rjumpi(7, OP_PUSH0) + OP_PUSH0 + OP_PUSH0 +
rjumpi(1, OP_PUSH0) + OP_POP + OP_PUSH0 + OP_PUSH0 + OP_REVERT,
5),
EOFValidationError::success);
// Final "OP_POP + OP_POP + OP_PUSH0 + OP_PUSH0 + OP_REVERT" can be reached with stack heights:
// 0, 2 or 1. Stack underflow when height is 0.
add_test_case(eof_bytecode(rjumpi(7, OP_PUSH0) + OP_PUSH0 + OP_PUSH0 + rjumpi(1, OP_PUSH0) +
OP_POP + OP_POP + OP_PUSH0 + OP_PUSH0 + OP_REVERT,
4),
EOFValidationError::stack_underflow);
}
TEST_F(eof_validation, stack_range_maximally_broad)
{
// Construct series of RJUMPIs all targeting final STOP.
// Stack range at STOP is [0, 1023]
bytecode code = OP_STOP;
int16_t offset = 1;
for (auto i = 0; i < 1023; ++i)
{
code = rjumpi(offset, OP_PUSH0) + OP_PUSH0 + code;
offset += 5;
}
add_test_case(eof_bytecode(code, 1023), EOFValidationError::success, "valid_1023_rjumpis");
code = rjumpi(offset, OP_PUSH0) + OP_PUSH0 + code;
add_test_case(eof_bytecode(code, 1023), EOFValidationError::invalid_max_stack_height,
"invalid_1024_rjumpis");
}
TEST_F(eof_validation, backwards_rjump)
{
add_test_case(eof_bytecode(rjump(-3)), EOFValidationError::success);
add_test_case(eof_bytecode(push0() + OP_POP + rjump(-5), 1), EOFValidationError::success);
// rjump backwards from different locations to the same target
add_test_case(eof_bytecode(push0() + OP_POP + rjumpi(3, 1) + rjump(-8) + rjump(-11), 1),
EOFValidationError::success);
// rjump backwards from different locations to the same target - stack height mismatch
add_test_case(
eof_bytecode(push0() + OP_POP + rjumpi(3, 1) + rjump(-8) + OP_PUSH0 + rjump(-12), 1),
EOFValidationError::stack_height_mismatch);
// infinite pushing loop
add_test_case(eof_bytecode(push0() + rjump(-4), 1), EOFValidationError::stack_height_mismatch);
// infinite popping loop
add_test_case(
eof_bytecode(push0() + OP_POP + rjump(-4), 1), EOFValidationError::stack_height_mismatch);
}
TEST_F(eof_validation, backwards_rjump_variable_stack)
{
add_test_case(
eof_bytecode(varstack + OP_PUSH0 + OP_POP + rjump(-5), 4), EOFValidationError::success);
// rjump backwards from different locations to the same target
add_test_case(
eof_bytecode(varstack + OP_PUSH0 + OP_POP + rjumpi(3, 1) + rjump(-8) + rjump(-11), 4),
EOFValidationError::success);
// rjump backwards from different locations to the same target - stack height mismatch
// 1st rjump: stack [1, 3]
// 2nd rjump: stack [2, 4]
// Jumping to [1, 3]
add_test_case(
eof_bytecode(
varstack + OP_PUSH0 + OP_POP + rjumpi(3, 1) + rjump(-8) + OP_PUSH0 + rjump(-12), 4),
EOFValidationError::stack_height_mismatch);
// rjump backwards - max stack height mismatch
// rjumpi: stack [1, 3]
// push0: stack [2, 4]
// rjump: stack [1, 4]
// Jumping from [1, 4] to [1, 3]
add_test_case(eof_bytecode(varstack + rjumpi(1, 0) + OP_PUSH0 + rjump(-7), 4),
EOFValidationError::stack_height_mismatch);
// rjump backwards - min stack height mismatch
// rjumpi: stack [1, 3]
// pop : stack [0, 2]
// rjump: stack [0, 3]
// Jumping from [0, 3] to [1, 3]
add_test_case(eof_bytecode(varstack + rjumpi(1, 0) + OP_POP + rjump(-7), 4),
EOFValidationError::stack_height_mismatch);
// infinite pushing loop
add_test_case(
eof_bytecode(varstack + push0() + rjump(-4), 4), EOFValidationError::stack_height_mismatch);
// infinite popping loop
add_test_case(eof_bytecode(varstack + push0() + OP_POP + rjump(-4), 3),
EOFValidationError::stack_height_mismatch);
}
TEST_F(eof_validation, forwards_rjump)
{
// forwards rjump + fallthrough - equal stack
add_test_case(eof_bytecode(push0() + rjumpi(3, 0) + rjump(1) + OP_NOT + OP_STOP, 2),
EOFValidationError::success);
// forwards rjump + forwards rjump + fallthrough - equal stack
add_test_case(
eof_bytecode(
push0() + rjumpi(8, 0) + rjumpi(6, 0) + rjump(4) + rjump(1) + OP_NOT + OP_STOP, 2),
EOFValidationError::success);
// forwards rjump + fallthrough - different stack
// rjump: [1, 1]
// push0: [2, 2]
add_test_case(eof_bytecode(push0() + rjumpi(3, 0) + rjump(1) + OP_PUSH0 + OP_STOP, 2),
EOFValidationError::success);
// forwards rjump + forwards rjump + fallthrough - different stack
add_test_case(eof_bytecode(push0() + rjumpi(8, 0) + // [1, 1]
rjumpi(7, 0) + // [1, 1]
rjump(5) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjump(1) + // [2, 2]
OP_NOT + // [1, 1]
OP_STOP, // [1, 2]
2),
EOFValidationError::success);
}
TEST_F(eof_validation, forwards_rjump_variable_stack)
{
add_test_case(eof_bytecode(varstack + rjump(0) + OP_STOP, 3), EOFValidationError::success);
// forwards rjump + fallthrough - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + rjumpi(3, 0) + rjump(1) + OP_NOT + OP_STOP, 5),
EOFValidationError::success);
// forwards rjump + forwards rjump + fallthrough - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + rjumpi(8, 0) + rjumpi(6, 0) + rjump(4) +
rjump(1) + OP_NOT + OP_STOP,
5),
EOFValidationError::success);
// forwards rjump + fallthrough - different stack
add_test_case(eof_bytecode(varstack + // [1, 3]
OP_PUSH0 + // [2, 4]
rjumpi(3, 0) + // [2, 4]
rjump(1) + // [2, 4]
OP_PUSH0 + // [3, 5]
OP_STOP, // [2, 5]
5),
EOFValidationError::success);
// forwards rjump + forwards rjump + fallthrough - different stack
add_test_case(eof_bytecode(varstack + rjumpi(8, 0) + // [1, 3]
rjumpi(7, 0) + // [1, 3]
rjump(5) + // [1, 3]
OP_PUSH0 + // [2, 4]
rjump(1) + // [2, 4]
OP_NOT + // [1, 3]
OP_STOP, // [1, 4]
4),
EOFValidationError::success);
}
TEST_F(eof_validation, backwards_rjumpi)
{
add_test_case(
eof_bytecode(push0() + OP_POP + rjumpi(-7, 0) + OP_STOP, 1), EOFValidationError::success);
// rjumpi backwards from different locations to the same target
add_test_case(eof_bytecode(push0() + OP_POP + rjumpi(-7, 0) + rjumpi(-12, 0) + OP_STOP, 1),
EOFValidationError::success);
// rjumpi backwards from different locations to the same target - stack height mismatch
add_test_case(
eof_bytecode(push0() + OP_POP + rjumpi(-7, 0) + OP_PUSH0 + rjumpi(-13, 0) + OP_STOP, 2),
EOFValidationError::stack_height_mismatch);
// valid loop
add_test_case(eof_bytecode(push0() + push(1) + OP_ADD + rjumpi(-7, OP_DUP1) + OP_STOP, 2),
EOFValidationError::success);
// pushing loop
add_test_case(
eof_bytecode(push0() + push(1) + OP_ADD + OP_DUP1 + rjumpi(-8, OP_DUP1) + OP_STOP, 2),
EOFValidationError::stack_height_mismatch);
// popping loop
add_test_case(eof_bytecode(push0() + OP_PUSH0 + OP_PUSH0 + rjumpi(-4, OP_POP) + OP_STOP, 2),
EOFValidationError::stack_height_mismatch);
// rjump and rjumpi with the same target - equal stack
add_test_case(eof_bytecode(push0() + // [1, 1]
OP_POP + // [0, 0]
rjumpi(-7, 0) + // [1, 1]
rjump(-10), // [1, 1]
1),
EOFValidationError::success);
// rjump and rjumpi with the same target - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
OP_POP + // [0, 0]
rjumpi(-7, 0) + // [0, 0]
OP_PUSH0 + // [1, 1]
rjump(-11), // [1, 1]
1),
EOFValidationError::stack_height_mismatch);
// rjumpi backwards - only max stack height mismatch
add_test_case(eof_bytecode(OP_PUSH0 + // [1, 1]
rjumpi(1, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjumpi(-11, 0) + // [1, 2]
OP_STOP, // [1, 2]
3),
EOFValidationError::stack_height_mismatch);
// rjumpi backwards - only min stack height mismatch
add_test_case(eof_bytecode(OP_PUSH0 + OP_PUSH0 + // [2, 2]
rjumpi(1, 0) + // [2, 2]
OP_POP + // [1, 1]
rjumpi(-11, 0) + // [1, 2]
OP_STOP, // [1, 2]
3),
EOFValidationError::stack_height_mismatch);
}
TEST_F(eof_validation, backwards_rjumpi_variable_stack)
{
add_test_case(eof_bytecode(varstack + rjumpi(-5, 0) + OP_STOP, 4), EOFValidationError::success);
add_test_case(eof_bytecode(varstack + OP_PUSH0 + OP_POP + rjumpi(-7, 0) + OP_STOP, 4),
EOFValidationError::success);
// rjumpi backwards from different locations to the same target
add_test_case(
eof_bytecode(varstack + OP_PUSH0 + OP_POP + rjumpi(-7, 0) + rjumpi(-12, 0) + OP_STOP, 4),
EOFValidationError::success);
// rjumpi backwards from different locations to the same target - stack height mismatch
add_test_case(
eof_bytecode(
varstack + OP_PUSH0 + OP_POP + rjumpi(-7, 0) + OP_PUSH0 + rjumpi(-13, 0) + OP_STOP, 5),
EOFValidationError::stack_height_mismatch);
// valid loop
add_test_case(
eof_bytecode(varstack + OP_PUSH0 + push(1) + OP_ADD + rjumpi(-7, OP_DUP1) + OP_STOP, 5),
EOFValidationError::success);
// pushing loop
add_test_case(
eof_bytecode(
varstack + OP_PUSH0 + push(1) + OP_ADD + OP_DUP1 + rjumpi(-8, OP_DUP1) + OP_STOP, 5),
EOFValidationError::stack_height_mismatch);
// popping loop
add_test_case(
eof_bytecode(varstack + OP_PUSH0 + OP_PUSH0 + OP_PUSH0 + rjumpi(-4, OP_POP) + OP_STOP, 5),
EOFValidationError::stack_height_mismatch);
// rjump and rjumpi with the same target - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
OP_POP + // [1, 3]
rjumpi(-7, 0) + // [1, 3]
rjump(-10), // [1, 3]
4),
EOFValidationError::success);
// rjump and rjumpi with the same target - different stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
OP_POP + // [1, 3]
rjumpi(-7, 0) + // [1, 3]
OP_PUSH0 + // [2, 4]
rjump(-11), // [2, 4]
4),
EOFValidationError::stack_height_mismatch);
}
TEST_F(eof_validation, forwards_rjumpi)
{
add_test_case(eof_bytecode(rjumpi(0, 1) + OP_STOP, 1), EOFValidationError::success);
// forwards rjump + fallthrough - equal stack
add_test_case(
eof_bytecode(push0() + rjumpi(1, 0) + OP_NOT + OP_STOP, 2), EOFValidationError::success);
// forwards rjumpi + forwards rjumpi + fallthrough - equal stack
add_test_case(eof_bytecode(push0() + rjumpi(6, 0) + rjumpi(1, 0) + OP_NOT + OP_STOP, 2),
EOFValidationError::success);
// forwards rjumpi + fallthrough - different stack
// rjumpi: [1, 1]
// push0: [2, 2]
add_test_case(
eof_bytecode(push0() + rjumpi(1, 0) + OP_PUSH0 + OP_STOP, 2), EOFValidationError::success);
// forwards rjumpi + forwards rjumpi + fallthrough - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(7, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjumpi(1, 0) + // [2, 2]
OP_NOT + // [2, 2]
OP_STOP, // [1, 2]
3),
EOFValidationError::success);
// valid loop with a break
add_test_case(eof_bytecode(push0() + // [1, 1]
push(1) + // [2, 2]
OP_ADD + // [1, 1]
OP_DUP1 + // [2, 2]
push(10) + // [3, 3]
rjumpi(4, OP_GT) + // [1, 1]
rjumpi(-14, OP_DUP1) + // [1, 1]
OP_STOP, // [1, 1]
3),
EOFValidationError::success);
// valid loop with a break - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
push(1) + // [2, 2]
OP_ADD + // [1, 1]
OP_DUP1 + // [2, 2]
push(10) + // [3, 3]
rjumpi(5, OP_GT) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjumpi(-13, OP_DUP1) + // [2, 2]
OP_STOP, // [1, 2]
3),
EOFValidationError::success);
// if-then-else with push - equal stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(4, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjump(1) + // [2, 2]
OP_PUSH0 + // [2, 2]
OP_STOP, // [2, 2]
2),
EOFValidationError::success);
// if-then-else with push - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(4, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjump(1) + // [2, 2]
OP_NOT + // [1, 1]
OP_STOP, // [1, 2]
2),
EOFValidationError::success);
// if-then-else with pop - equal stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(4, 0) + // [1, 1]
OP_POP + // [0, 0]
rjump(1) + // [0, 0]
OP_POP + // [0, 0]
OP_STOP, // [0, 0]
2),
EOFValidationError::success);
// if-then-else with pop - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(4, 0) + // [1, 1]
OP_POP + // [0, 0]
rjump(1) + // [0, 0]
OP_NOT + // [1, 1]
OP_STOP, // [0, 1]
2),
EOFValidationError::success);
// rjump and rjumpi with the same target - equal stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(3, 0) + // [1, 1]
rjump(0) + // [1, 1]
OP_STOP, // [1, 1]
2),
EOFValidationError::success);
// rjump and rjumpi with the same target - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(4, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjump(0) + // [2, 2]
OP_STOP, // [1, 2]
2),
EOFValidationError::success);
}
TEST_F(eof_validation, forwards_rjumpi_variable_stack)
{
add_test_case(eof_bytecode(varstack + rjumpi(0, 1) + OP_STOP, 4), EOFValidationError::success);
// forwards rjump + fallthrough - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + rjumpi(1, 0) + OP_NOT + OP_STOP, 5),
EOFValidationError::success);
// forwards rjumpi + forwards rjumpi + fallthrough - equal stack
add_test_case(
eof_bytecode(varstack + OP_PUSH0 + rjumpi(6, 0) + rjumpi(1, 0) + OP_NOT + OP_STOP, 5),
EOFValidationError::success);
// forwards rjumpi + fallthrough - different stack
// rjumpi: [4, 4]
// push0: [5, 5]
add_test_case(eof_bytecode(varstack + OP_PUSH0 + rjumpi(1, 0) + OP_PUSH0 + OP_STOP, 5),
EOFValidationError::success);
// forwards rjumpi + forwards rjumpi + fallthrough - different stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(7, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjumpi(1, 0) + // [3, 5]
OP_NOT + // [3, 5]
OP_STOP, // [2, 5]
6),
EOFValidationError::success);
// valid loop with a break
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
push(1) + // [3, 5]
OP_ADD + // [2, 4]
OP_DUP1 + // [3, 5]
push(10) + // [4, 6]
rjumpi(4, OP_GT) + // [2, 4]
rjumpi(-14, OP_DUP1) + // [2, 4]
OP_STOP, // [2, 4]
6),
EOFValidationError::success);
// valid loop with a break - different stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
push(1) + // [3, 5]
OP_ADD + // [2, 4]
OP_DUP1 + // [3, 5]
push(10) + // [4, 6]
rjumpi(5, OP_GT) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjumpi(-13, OP_DUP1) + // [3, 5]
OP_STOP, // [2, 5]
6),
EOFValidationError::success);
// if-then-else with push - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(4, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjump(1) + // [3, 5]
OP_PUSH0 + // [3, 5]
OP_STOP, // [3, 5]
5),
EOFValidationError::success);
// if-then-else with push - different stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(4, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjump(1) + // [3, 5]
OP_NOT + // [2, 4]
OP_STOP, // [2, 5]
5),
EOFValidationError::success);
// if-then-else with pop - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(4, 0) + // [2, 4]
OP_POP + // [1, 3]
rjump(1) + // [1, 3]
OP_POP + // [1, 3]
OP_STOP, // [1, 3]
5),
EOFValidationError::success);
// if-then-else with pop - different stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(4, 0) + // [2, 4]
OP_POP + // [1, 3]
rjump(1) + // [1, 3]
OP_NOT + // [2, 4]
OP_STOP, // [1, 4]
5),
EOFValidationError::success);
// rjump and rjumpi with the same target - equal stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(3, 0) + // [2, 4]
rjump(0) + // [2, 4]
OP_STOP, // [2, 4]
5),
EOFValidationError::success);
// rjump and rjumpi with the same target - different stack
add_test_case(eof_bytecode(varstack + OP_PUSH0 + // [2, 4]
rjumpi(4, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjump(0) + // [3, 5]
OP_STOP, // [2, 5]
5),
EOFValidationError::success);
}
TEST_F(eof_validation, backwards_rjumpv)
{
add_test_case(eof_bytecode(rjumpv({-6}, 0) + OP_STOP, 1), EOFValidationError::success);
add_test_case(
eof_bytecode(push0() + OP_POP + rjumpv({-8}, 0) + OP_STOP, 1), EOFValidationError::success);
// rjumpv backwards from different locations to the same target
add_test_case(eof_bytecode(push0() + OP_POP + rjumpv({-8}, 0) + rjumpv({-14}, 0) + OP_STOP, 1),
EOFValidationError::success);
// rjumpv backwards from different locations to the same target - stack height mismatch
add_test_case(
eof_bytecode(push0() + OP_POP + rjumpv({-8}, 0) + push0() + rjumpv({-15}, 0) + OP_STOP, 2),
EOFValidationError::stack_height_mismatch);
// rjump and rjumpv with the same target - equal stack
add_test_case(eof_bytecode(push0() + // [1, 1]
OP_POP + // [0, 0]
rjumpv({-8}, 0) + // [0, 0]
rjump(-11), // [0, 0]
1),
EOFValidationError::success);
// rjump and rjumpv with the same target - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
OP_POP + // [0, 0]
rjumpv({-8}, 0) + // [0, 0]
OP_PUSH0 + // [1, 1]
rjump(-12), // [1, 1]
1),
EOFValidationError::stack_height_mismatch);
// rjumpv backwards - only max stack height mismatch
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpi(1, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjumpv({-12}, 0) + // [1, 2]
OP_STOP, // [1, 2]
3),
EOFValidationError::stack_height_mismatch);
// rjumpv backwards - only min stack height mismatch
add_test_case(eof_bytecode(OP_PUSH0 + OP_PUSH0 + // [2, 2]
rjumpi(1, 0) + // [2, 2]
OP_POP + // [1, 1]
rjumpv({-12}, 0) + // [1, 2]
OP_STOP, // [1, 2]
3),
EOFValidationError::stack_height_mismatch);
}
TEST_F(eof_validation, backwards_rjumpv_variable_stack)
{
add_test_case(
eof_bytecode(varstack + rjumpv({-6}, 0) + OP_STOP, 4), EOFValidationError::success);
add_test_case(eof_bytecode(varstack + push0() + OP_POP + rjumpv({-8}, 0) + OP_STOP, 4),
EOFValidationError::success);
// rjumpv backwards from different locations to the same target
add_test_case(
eof_bytecode(varstack + push0() + OP_POP + rjumpv({-8}, 0) + rjumpv({-14}, 0) + OP_STOP, 4),
EOFValidationError::success);
// rjumpv backwards from different locations to the same target - stack height mismatch
add_test_case(eof_bytecode(varstack + push0() + OP_POP + rjumpv({-8}, 0) + push0() +
rjumpv({-15}, 0) + OP_STOP,
5),
EOFValidationError::stack_height_mismatch);
// rjump and rjumpv with the same target - equal stack
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
OP_POP + // [1, 3]
rjumpv({-8}, 0) + // [1, 3]
rjump(-11), // [1, 3]
4),
EOFValidationError::success);
// rjump and rjumpv with the same target - different stack
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
OP_POP + // [1, 3]
rjumpv({-8}, 0) + // [1, 3]
OP_PUSH0 + // [2, 4]
rjump(-12), // [2, 4]
4),
EOFValidationError::stack_height_mismatch);
// rjumpv backwards - only max stack height mismatch
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
rjumpi(1, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjumpv({-12}, 0) + // [2, 5]
OP_STOP, // [2, 5]
5),
EOFValidationError::stack_height_mismatch);
// rjumpv backwards - only min stack height mismatch
add_test_case(eof_bytecode(varstack + OP_PUSH0 + OP_PUSH0 + // [3, 5]
rjumpi(1, 0) + // [3, 5]
OP_POP + // [2, 4]
rjumpv({-12}, 0) + // [2, 5]
OP_STOP, // [2, 5]
5),
EOFValidationError::stack_height_mismatch);
}
TEST_F(eof_validation, forwards_rjumpv)
{
add_test_case(eof_bytecode(rjumpv({0}, 1) + OP_STOP, 1), EOFValidationError::success);
// forwards rjumpv + fallthrough - equal stack
add_test_case(
eof_bytecode(push0() + rjumpv({1}, 0) + OP_NOT + OP_STOP, 2), EOFValidationError::success);
// forwards rjumpv 2 cases + fallthrough - equal stack
add_test_case(
eof_bytecode(push0() + rjumpv({2, 3}, 0) + OP_PUSH0 + OP_POP + OP_NOT + OP_STOP, 2),
EOFValidationError::success);
// forwards rjumpv + fallthrough - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpv({1}, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
OP_STOP, // [1, 2]
2),
EOFValidationError::success);
// forwards rjumpv 2 cases + fallthrough - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpv({1, 2}, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
OP_PUSH0 + // [2, 3]
OP_NOT + // [1, 3]
OP_STOP, // [1, 2]
3),
EOFValidationError::success);
// switch - equal stack
add_test_case(eof_bytecode(push0() + rjumpv({5, 10}, 0) + // [1, 1]
push(1) + rjump(7) + // [2, 2]
push(2) + rjump(2) + // [2, 2]
push(3) + // [2, 2]
OP_STOP, // [2, 2]
2),
EOFValidationError::success);
// switch with pushes - different stack
add_test_case(eof_bytecode(push0() + rjumpv({4, 9}, 0) + // [1, 1]
push0() + rjump(8) + // [2, 2]
push0() + push0() + rjump(3) + // [3, 3]
push0() + push0() + push0() + // [4, 4]
OP_STOP, // [1, 4]
4),
EOFValidationError::success);
// switch with pops - different stack
add_test_case(eof_bytecode(4 * push0() + rjumpv({4, 9}, 0) + // [4, 4]
OP_POP + rjump(8) + // [3, 3]
OP_POP + OP_POP + rjump(3) + // [2, 2]
OP_POP + OP_POP + OP_POP + // [1, 1]
OP_STOP, // [1, 4]
5),
EOFValidationError::success);
// rjump and rjumpv with the same target - equal stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpv({3}, 0) + // [1, 1]
rjump(0) + // [1, 1]
OP_STOP, // [1, 1]
2),
EOFValidationError::success);
// rjump and rjumpv with the same target - different stack
add_test_case(eof_bytecode(push0() + // [1, 1]
rjumpv({4}, 0) + // [1, 1]
OP_PUSH0 + // [2, 2]
rjump(0) + // [2, 2]
OP_STOP, // [1, 2]
2),
EOFValidationError::success);
}
TEST_F(eof_validation, forwards_rjumpv_variable_stack)
{
add_test_case(
eof_bytecode(varstack + rjumpv({0}, 1) + OP_STOP, 4), EOFValidationError::success);
// forwards rjumpv + fallthrough - equal stack
add_test_case(eof_bytecode(varstack + push0() + rjumpv({1}, 0) + OP_NOT + OP_STOP, 5),
EOFValidationError::success);
// forwards rjumpv 2 cases + fallthrough - equal stack
add_test_case(
eof_bytecode(
varstack + push0() + rjumpv({2, 3}, 0) + OP_PUSH0 + OP_POP + OP_NOT + OP_STOP, 5),
EOFValidationError::success);
// forwards rjumpv + fallthrough - different stack
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
rjumpv({1}, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
OP_STOP, // [2, 5]
5),
EOFValidationError::success);
// forwards rjumpv 2 cases + fallthrough - different stack
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
rjumpv({1, 2}, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
OP_PUSH0 + // [2, 6]
OP_NOT + // [2, 6]
OP_STOP, // [2, 6]
6),
EOFValidationError::success);
// switch - equal stack
add_test_case(eof_bytecode(varstack + push0() + rjumpv({5, 10}, 0) + // [2, 4]
push(1) + rjump(7) + // [3, 5]
push(2) + rjump(2) + // [3, 5]
push(3) + // [3, 5]
OP_STOP, // [3, 5]
5),
EOFValidationError::success);
// switch with pushes - different stack
add_test_case(eof_bytecode(varstack + push0() + rjumpv({4, 9}, 0) + // [2, 4]
push0() + rjump(8) + // [3, 5]
push0() + push0() + rjump(3) + // [4, 6]
push0() + push0() + push0() + // [5, 7]
OP_STOP, // [3, 7]
7),
EOFValidationError::success);
// switch with pops - different stack
add_test_case(eof_bytecode(varstack + 4 * push0() + rjumpv({4, 9}, 0) + // [5, 7]
OP_POP + rjump(8) + // [4, 6]
OP_POP + OP_POP + rjump(3) + // [3, 5]
OP_POP + OP_POP + OP_POP + // [2, 4]
OP_STOP, // [2, 6]
8),
EOFValidationError::success);
// rjump and rjumpv with the same target - equal stack
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
rjumpv({3}, 0) + // [2, 4]
rjump(0) + // [2, 4]
OP_STOP, // [2, 4]
5),
EOFValidationError::success);
// rjump and rjumpv with the same target - different stack
add_test_case(eof_bytecode(varstack + push0() + // [2, 4]
rjumpv({4}, 0) + // [2, 4]
OP_PUSH0 + // [3, 5]
rjump(0) + // [3, 5]
OP_STOP, // [2, 5]
5),
EOFValidationError::success);
}
TEST_F(eof_validation, self_referencing_jumps)
{
// rjump from stack 0 to stack 0
add_test_case(eof_bytecode(rjump(-3)), EOFValidationError::success, "rjump");
// rjumpi from stack 0 to stack 1
add_test_case(
eof_bytecode(rjumpi(-3, 0) + OP_STOP), EOFValidationError::stack_height_mismatch, "rjumpi");
// rjumpv from stack 0 to stack 1
add_test_case(eof_bytecode(rjumpv({-4}, 0) + OP_STOP),
EOFValidationError::stack_height_mismatch, "rjumpv");
}
TEST_F(eof_validation, self_referencing_jumps_variable_stack)
{
// rjumpf from stack [1, 3] to stack [1, 3]
add_test_case(eof_bytecode(varstack + rjump(-3), 3), EOFValidationError::success, "rjump");
// rjumpi from stack [1, 3] to stack [2, 4]
add_test_case(eof_bytecode(varstack + rjumpi(-3, 0) + OP_STOP, 4),
EOFValidationError::stack_height_mismatch, "rjumpi");
// rjumpv from stack [1, 3] to stack [2, 4]
add_test_case(eof_bytecode(varstack + rjumpv({-4}, 0) + OP_STOP, 4),
EOFValidationError::stack_height_mismatch, "rjumpv");
}
TEST_F(eof_validation, underflow)
{
add_test_case(eof_bytecode(bytecode{OP_ADD} + OP_STOP, 0), EOFValidationError::stack_underflow);
// CALLF underflow
add_test_case(eof_bytecode(callf(1) + OP_STOP, 1).code(push0() + OP_RETF, 1, 2, 2),
EOFValidationError::stack_underflow);
// JUMPF to returning function
add_test_case(eof_bytecode(callf(1) + OP_STOP, 2)
.code(jumpf(2), 0, 2, 0)
.code(push0() + OP_RETF, 1, 2, 2),
EOFValidationError::stack_underflow);
// JUMPF to non-returning function
add_test_case(eof_bytecode(jumpf(1), 0).code(revert(0, 0), 1, 0x80, 3),
EOFValidationError::stack_underflow);
}
TEST_F(eof_validation, underflow_variable_stack)
{
// LOG2 underflow - [1, 3] stack - neither min nor max enough for 4 inputs
add_test_case(
eof_bytecode(varstack + OP_LOG2 + OP_STOP, 3), EOFValidationError::stack_underflow);
// ADD underflow - [1, 3] stack - only max enough for 5 inputs
add_test_case(
eof_bytecode(varstack + OP_ADD + OP_STOP, 3), EOFValidationError::stack_underflow);
// CALLF underflow - [1, 3] stack - neither min nor max enough for 5 inputs
add_test_case(eof_bytecode(varstack + callf(1) + OP_STOP, 4).code(push0() + OP_RETF, 4, 5, 5),
EOFValidationError::stack_underflow);
// CALLF underflow - [1, 3] stack - only max enough for 3 inputs
add_test_case(eof_bytecode(varstack + callf(1) + OP_STOP, 4).code(push0() + OP_RETF, 3, 4, 4),
EOFValidationError::stack_underflow);
// JUMPF to returning function - neither min nor max enough for 5 inputs
add_test_case(eof_bytecode(callf(1) + OP_STOP, 3)
.code(varstack + jumpf(2), 0, 3, 3)
.code(bytecode{OP_POP} + OP_POP + OP_RETF, 5, 3, 3),
EOFValidationError::stack_underflow);
// JUMPF to non-returning function - [1, 3] stack - neither min nor max enough for 5 inputs
add_test_case(eof_bytecode(varstack + jumpf(1), 0).code(revert(0, 0), 5, 0x80, 7),
EOFValidationError::stack_underflow);
// JUMPF to non-returning function - [1, 3] stack - only max enough for 3 inputs
add_test_case(eof_bytecode(varstack + jumpf(1), 0).code(revert(0, 0), 3, 0x80, 5),
EOFValidationError::stack_underflow);
}
TEST_F(eof_validation, callf_stack_validation)
{
add_test_case(eof_bytecode(callf(1) + OP_STOP, 1)
.code(push0() + push0() + callf(2) + OP_RETF, 0, 1, 2)
.code(bytecode(OP_POP) + OP_RETF, 2, 1, 2),
EOFValidationError::success);
add_test_case(eof_bytecode(callf(1) + OP_STOP, 1)
.code(push0() + push0() + push0() + callf(2) + OP_RETF, 0, 1, 3)
.code(bytecode(OP_POP) + OP_RETF, 2, 1, 2),
EOFValidationError::stack_higher_than_outputs_required);
add_test_case(eof_bytecode(callf(1) + OP_STOP, 1)
.code(push0() + callf(2) + OP_RETF, 0, 1, 1)
.code(bytecode(OP_POP) + OP_RETF, 2, 1, 2),
EOFValidationError::stack_underflow);
}
TEST_F(eof_validation, callf_stack_overflow)
{
add_test_case(eof_bytecode(callf(1) + OP_STOP)
.code(512 * push(1) + callf(1) + 512 * OP_POP + OP_RETF, 0, 0, 512),
EOFValidationError::success);
add_test_case(eof_bytecode(callf(1) + OP_STOP)
.code(513 * push(1) + callf(1) + 513 * OP_POP + OP_RETF, 0, 0, 513),
EOFValidationError::stack_overflow);
add_test_case(eof_bytecode(callf(1) + OP_STOP)
.code(1023 * push(1) + callf(1) + 1023 * OP_POP + OP_RETF, 0, 0, 1023),
EOFValidationError::stack_overflow);
add_test_case(eof_bytecode(callf(1) + OP_STOP)
.code(1023 * push(1) + callf(2) + 1023 * OP_POP + OP_RETF, 0, 0, 1023)
.code(push0() + OP_POP + OP_RETF, 0, 0, 1),
EOFValidationError::success);
add_test_case(eof_bytecode(callf(1) + OP_STOP)
.code(1023 * push(1) + callf(2) + 1023 * OP_POP + OP_RETF, 0, 0, 1023)
.code(push0() + push0() + OP_POP + OP_POP + OP_RETF, 0, 0, 2),
EOFValidationError::stack_overflow);
}
TEST_F(eof_validation, callf_stack_overflow_variable_stack)
{
add_test_case(eof_bytecode(varstack + 509 * push(1) + callf(1) + OP_STOP, 512)
.code(512 * push(1) + 512 * OP_POP + OP_RETF, 0, 0, 512),
EOFValidationError::success);
// CALLF from [510, 512] stack to function with 515 max stack - both min and max stack overflow
add_test_case(eof_bytecode(varstack + 509 * push(1) + callf(1) + OP_STOP, 512)
.code(515 * push(1) + 515 * OP_POP + OP_RETF, 0, 0, 515),
EOFValidationError::stack_overflow);
// CALLF from [510, 512] stack to function with 514 max stack - only max stack overflow
add_test_case(eof_bytecode(varstack + 509 * push(1) + callf(1) + OP_STOP, 512)
.code(514 * push(1) + 514 * OP_POP + OP_RETF, 0, 0, 514),
EOFValidationError::stack_overflow);
// CALLF from [1021, 1023] stack to function with 1 max stack
add_test_case(eof_bytecode(varstack + 1020 * push(1) + callf(1) + OP_STOP, 1023)
.code(push0() + OP_POP + OP_RETF, 0, 0, 1),
EOFValidationError::success);
// CALLF from [1021, 1023] stack to function with 5 max stack - both min and max stack overflow
add_test_case(eof_bytecode(varstack + 1020 * push(1) + callf(1) + OP_STOP, 1023)
.code(5 * push0() + 5 * OP_POP + OP_RETF, 0, 0, 5),
EOFValidationError::stack_overflow);
// CALLF from [1021, 1023] stack to function with 2 max stack - only max stack overflow
add_test_case(eof_bytecode(varstack + 1020 * push(1) + callf(1) + OP_STOP, 1023)
.code(push0() + push0() + OP_POP + OP_POP + OP_RETF, 0, 0, 2),
EOFValidationError::stack_overflow);
}
TEST_F(eof_validation, callf_with_inputs_stack_overflow)
{
add_test_case(eof_bytecode(1023 * push(1) + callf(1) + 1019 * OP_POP + OP_RETURN, 1023)
.code(bytecode{OP_POP} + OP_POP + OP_RETF, 2, 0, 2),
EOFValidationError::success);
add_test_case(eof_bytecode(1023 * push(1) + callf(1) + 1021 * OP_POP + OP_RETURN, 1023)
.code(push(1) + OP_POP + OP_RETF, 3, 3, 4),
EOFValidationError::success);
add_test_case(eof_bytecode(1023 * push(1) + callf(1) + 1021 * OP_POP + OP_RETURN, 1023)
.code(push0() + push0() + OP_RETF, 3, 5, 5),
EOFValidationError::stack_overflow);
add_test_case(eof_bytecode(1023 * push(1) + callf(1) + 1021 * OP_POP + OP_RETURN, 1023)
.code(push0() + push0() + OP_POP + OP_POP + OP_RETF, 3, 3, 5),
EOFValidationError::stack_overflow);
add_test_case(eof_bytecode(1024 * push(1) + callf(1) + 1020 * OP_POP + OP_RETURN, 1023)
.code(push0() + OP_POP + OP_POP + OP_POP + OP_RETF, 2, 0, 3),
EOFValidationError::stack_overflow);
add_test_case(
eof_bytecode(1023 * push(1) + callf(1) + 1020 * OP_POP + OP_RETURN, 1023)
.code(push0() + push0() + OP_POP + OP_POP + OP_POP + OP_POP + OP_RETF, 2, 0, 4),
EOFValidationError::stack_overflow);
}
TEST_F(eof_validation, callf_with_inputs_stack_overflow_variable_stack)