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Documents library view functions and adds unit test.

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Erik Kundt
2018-10-10 12:28:24 +02:00
parent 7d2dc14304
commit 4beabf6686
2 changed files with 28 additions and 1 deletions
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docs/contracts.rst
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@@ -485,7 +485,9 @@ Functions can be declared ``view`` in which case they promise not to modify the
.. note::
If the compiler's EVM target is Byzantium or newer (default) the opcode
``STATICCALL`` is used for ``view`` functions which enforces the state
to stay unmodified as part of the EVM execution.
to stay unmodified as part of the EVM execution. For library ``view`` functions
``DELEGATECALL`` is used. Since they are executed in the context of the calling
contract, the static checker is extended to the library.
The following statements are considered modifying the state: