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| author | chriseth <chris@ethereum.org> | 2018-09-04 22:31:25 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-09-04 22:31:25 +0800 |
| commit | cc7daf7b476f498c4dcde7bdb342974097ffe9bf (patch) | |
| tree | 707656e46a626f93bb24d45710ebda7ab31a013f /docs/contracts.rst | |
| parent | d88e5039ccc768f810f7882aa1f9ae338bc27dd3 (diff) | |
| parent | e3097b30dace9bbd88a5a74e6507baad0bc12cc4 (diff) | |
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Merge pull request #4829 from ethereum/callBytesReturn
Add return data to bare calls.
Diffstat (limited to 'docs/contracts.rst')
| -rw-r--r-- | docs/contracts.rst | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/docs/contracts.rst b/docs/contracts.rst index 669a374f..8fd1c89e 100644 --- a/docs/contracts.rst +++ b/docs/contracts.rst @@ -406,7 +406,8 @@ inheritable properties of contracts and may be overridden by derived contracts. /// The `return 7` statement assigns 7 to the return value but still /// executes the statement `locked = false` in the modifier. function f() public noReentrancy returns (uint) { - require(msg.sender.call("")); + (bool success,) = msg.sender.call(""); + require(success); return 7; } } @@ -645,7 +646,8 @@ Like any function, the fallback function can execute complex operations as long contract Caller { function callTest(Test test) public returns (bool) { - require(address(test).call(abi.encodeWithSignature("nonExistingFunction()"))); + (bool success,) = address(test).call(abi.encodeWithSignature("nonExistingFunction()")); + require(success); // results in test.x becoming == 1. // If someone sends ether to that contract, |