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Document revert()

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Alex Beregszaszi
2017-02-10 22:42:33 +00:00
parent 586d156f33
commit 28a7b1e019
3 changed files with 6 additions and 3 deletions
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docs/control-structures.rst
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@@ -400,7 +400,7 @@ While a user-provided exception is generated in the following situations:
#. Calling ``throw``.
#. The condition of ``assert(condition)`` is not met.
Internally, Solidity performs an "invalid jump" when a user-provided exception is thrown. In contrast, it performs an invalid operation
Internally, Solidity performs a revert operation (instruction ``0xfd``) when a user-provided exception is thrown. In contrast, it performs an invalid operation
(instruction ``0xfe``) if a runtime exception is encountered. In both cases, this causes
the EVM to revert all changes made to the state. The reason for this is that there is no safe way to continue execution, because an expected effect
did not occur. Because we want to retain the atomicity of transactions, the safest thing to do is to revert all changes and make the whole transaction