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| author | ritzdorf <hubert@chainsecurity.com> | 2018-11-13 22:54:13 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-11-13 22:54:13 +0800 |
| commit | 8258712771164da6d365f2417eeb968045522a6f (patch) | |
| tree | 486c30b7c725274edbe59c3755dd1035b169198e | |
| parent | c237013911aa5bb6102e1262e6aa62178c0f02e0 (diff) | |
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keccak256 does not call an external contract
``keccak256`` will be compiled to the ``SHA3`` opcode and not call an external contract.
| -rw-r--r-- | docs/contracts.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/contracts.rst b/docs/contracts.rst index 4d439b26..c1c51e56 100644 --- a/docs/contracts.rst +++ b/docs/contracts.rst @@ -455,7 +455,7 @@ execution data (``msg.value`` or ``gasleft()``) or makes calls to external contr that might have a side-effect on memory allocation are allowed, but those that might have a side-effect on other memory objects are not. The built-in functions ``keccak256``, ``sha256``, ``ripemd160``, ``ecrecover``, ``addmod`` and ``mulmod`` -are allowed (even though they do call external contracts). +are allowed (even though, with the exception of ``keccak256``, they do call external contracts). The reason behind allowing side-effects on the memory allocator is that it should be possible to construct complex objects like e.g. lookup-tables. |