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Slice (address).code disallowed with constant #4360

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Philogy opened this issue Nov 14, 2024 · 2 comments
Open

Slice (address).code disallowed with constant #4360

Philogy opened this issue Nov 14, 2024 · 2 comments
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bug - type 0 compiler halts or panics instead of generating code bug - UX a bug related to UX

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@Philogy
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Philogy commented Nov 14, 2024

Version Information

  • vyper Version (output of vyper --version): 0.4.0+commit.e9db8d9
  • OS: osx
  • Python Version (output of python --version): 3.12.4

What's your issue about?

I cannot do slice(address.code, offset, SOME_CONSTANT) if SOME_CONSTANT is defined as SOME_CONSTANT: constant(uint256) giving me the error:

Error: Compiler run failed:
Location: src/periphery/ControllerV1.vy
(address).code is only allowed inside of a slice function with a constant length

  contract "src/periphery/ControllerV1.vy:155", function "_get_partial_key", line 155:8 
       154     section: Bytes[CONFIG_ENTRY_SIZE] = slice(
  ---> 155         store.code,
  -----------------^
       156         STORE_HEADER_SIZE + index * CONFIG_ENTRY_SIZE,
@Philogy Philogy added the needs triage needs triage label Nov 14, 2024
@charles-cooper charles-cooper added bug - UX a bug related to UX bug - type 0 compiler halts or panics instead of generating code and removed needs triage needs triage labels Nov 19, 2024
@charles-cooper
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repro:

SIZE: constant(uint256) = 5

@external
def foo(index: uint256) -> Bytes[256]:
    return slice((msg.sender).code, index, SIZE)

@trocher
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trocher commented Nov 19, 2024

Subset of #4190

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Labels
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