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add explicit message when we find a library placeholder #158

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merged 2 commits into from
Aug 3, 2023
Merged

add explicit message when we find a library placeholder #158

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5d6792e
add explicit message when we find a library placeholder
karmacoma-eth Aug 3, 2023
8d4fe8b
Merge branch 'main' into handle-library-placeholder
daejunpark Aug 3, 2023
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10 changes: 8 additions & 2 deletions src/halmos/sevm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@
hexify,
)
from .cheatcodes import halmos_cheat_code, hevm_cheat_code, console, Prank
from .warnings import warn, UNSUPPORTED_OPCODE
from .warnings import warn, UNSUPPORTED_OPCODE, LIBRARY_PLACEHOLDER

Word = Any # z3 expression (including constants)
Byte = Any # z3 expression (including constants)
Expand Down Expand Up @@ -501,7 +501,13 @@ def from_hexcode(hexcode: str):
if hexcode.startswith("0x"):
hexcode = hexcode[2:]

return Contract(bytes.fromhex(hexcode))
if "__" in hexcode:
warn(LIBRARY_PLACEHOLDER, f"contract hexcode contains library placeholder")

try:
return Contract(bytes.fromhex(hexcode))
except ValueError as e:
raise ValueError(f"{e} (hexcode={hexcode})")

def decode_instruction(self, pc: int) -> Instruction:
opcode = int_of(self[pc])
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1 change: 1 addition & 0 deletions src/halmos/warnings.py
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Expand Up @@ -22,6 +22,7 @@ def url(self) -> str:
COUNTEREXAMPLE_UNKNOWN = ErrorCode("counterexample-unknown")
INTERNAL_ERROR = ErrorCode("internal-error")
UNSUPPORTED_OPCODE = ErrorCode("unsupported-opcode")
LIBRARY_PLACEHOLDER = ErrorCode("library-placeholder")

LOOP_BOUND = ErrorCode("loop-bound")

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