Test Endofcode Underflow¶
Documentation for tests/amsterdam/eip8024_dupn_swapn_exchange/test_endofcode_underflow.py@b314d18e.
Generate fixtures for these test cases for Amsterdam with:
fill -v tests/amsterdam/eip8024_dupn_swapn_exchange/test_endofcode_underflow.py --fork Amsterdam
EIP-8024 end-of-code stack underflow regression tests.
When DUPN/SWAPN/EXCHANGE is the last byte of code, the missing immediate
byte decodes to 0 per EIP-8024, and the opcode must still execute with
that zero-decoded immediate. When the stack is short of the resulting
required depth, execution must halt with stack underflow — clients must
not treat the missing immediate as a graceful STOP.
See: - EIP-8024: https://eips.ethereum.org/EIPS/eip-8024 - Bounty: ethereum-bounty/nethermind#12 - Fix: NethermindEth/nethermind#11178
Test Functions Overview¶
| Name | Type | Cases (Amsterdam) | Description |
|---|---|---|---|
test_end_of_code_stack_underflow |
state_test | 3 | Test EIP-8024 opcodes at end of code with one fewer stack item than |