forward revert message from low level solidity call Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern) Announcing the arrival of Valued Associate #679: Cesar Manara Unicorn Meta Zoo #1: Why another podcast?does it comply with ERC20 if transfer() reverts instead returning false?This contract does not implement all functions and thus cannot be createdPadding parameter values in contract low-level callLower level implementation of solidity callGetting error message from require()Solidity: using low level call function on an EOAGet return data from delegatecallHow strings are stored in Solidity on a low level?Solidity: Info on How it works on the low levelremix ERC223: This contract does not implement all functions and thus cannot be created
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forward revert message from low level solidity call
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?does it comply with ERC20 if transfer() reverts instead returning false?This contract does not implement all functions and thus cannot be createdPadding parameter values in contract low-level callLower level implementation of solidity callGetting error message from require()Solidity: using low level call function on an EOAGet return data from delegatecallHow strings are stored in Solidity on a low level?Solidity: Info on How it works on the low levelremix ERC223: This contract does not implement all functions and thus cannot be created
I'm working on a proxy contract that will perform calls as follows:
bool success;
bytes memory returndata;
(success, returndata) = _to.call.value(_value)(_data);
require(success);
this works great, except that, if the call reverts with an error message, this function will simply reverts, hiding the reason string.
How can I retrieve the reason string (I assume in the returndata) and use if to revert properly
solidity revert-opcode proxy-contracts
asked Apr 1 at 14:02
AmxxAmxx
1185
add a comment |
I'm working on a proxy contract that will perform calls as follows:
bool success;
bytes memory returndata;
(success, returndata) = _to.call.value(_value)(_data);
require(success);
this works great, except that, if the call reverts with an error message, this function will simply reverts, hiding the reason string.
How can I retrieve the reason string (I assume in the returndata) and use if to revert properly
solidity revert-opcode proxy-contracts
asked Apr 1 at 14:02
AmxxAmxx
1185
add a comment |
I'm working on a proxy contract that will perform calls as follows:
bool success;
bytes memory returndata;
(success, returndata) = _to.call.value(_value)(_data);
require(success);
this works great, except that, if the call reverts with an error message, this function will simply reverts, hiding the reason string.
How can I retrieve the reason string (I assume in the returndata) and use if to revert properly
solidity revert-opcode proxy-contracts
asked Apr 1 at 14:02
AmxxAmxx
1185
I'm working on a proxy contract that will perform calls as follows:
bool success;
bytes memory returndata;
(success, returndata) = _to.call.value(_value)(_data);
require(success);
this works great, except that, if the call reverts with an error message, this function will simply reverts, hiding the reason string.
How can I retrieve the reason string (I assume in the returndata) and use if to revert properly
solidity revert-opcode proxy-contracts
solidity revert-opcode proxy-contracts
asked Apr 1 at 14:02
AmxxAmxx
1185
asked Apr 1 at 14:02
AmxxAmxx
1185
asked Apr 1 at 14:02
AmxxAmxx
1185
asked Apr 1 at 14:02
AmxxAmxx
1185
asked Apr 1 at 14:02
AmxxAmxx
1185
1185
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
It is simpler than you think:
require(success, string (returndata));
See documentation for details. You may also forward raw bytes, but you will need to use assembly.
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
I tryedrequire(success, returndata);and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P
– Amxx
Apr 1 at 14:52
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It is simpler than you think:
require(success, string (returndata));
See documentation for details. You may also forward raw bytes, but you will need to use assembly.
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
I tryedrequire(success, returndata);and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P
– Amxx
Apr 1 at 14:52
add a comment |
It is simpler than you think:
require(success, string (returndata));
See documentation for details. You may also forward raw bytes, but you will need to use assembly.
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
I tryedrequire(success, returndata);and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P
– Amxx
Apr 1 at 14:52
add a comment |
It is simpler than you think:
require(success, string (returndata));
See documentation for details. You may also forward raw bytes, but you will need to use assembly.
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
It is simpler than you think:
require(success, string (returndata));
See documentation for details. You may also forward raw bytes, but you will need to use assembly.
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
answered Apr 1 at 14:31
Mikhail VladimirovMikhail Vladimirov
1,651417
1,651417
I tryedrequire(success, returndata);and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P
– Amxx
Apr 1 at 14:52
add a comment |
I tryedrequire(success, returndata);and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P
– Amxx
Apr 1 at 14:52
I tryed
require(success, returndata); and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P– Amxx
Apr 1 at 14:52
I tryed
require(success, returndata); and started looking into assembly when it failled to compile ... thanks for proving how stupid I am :P– Amxx
Apr 1 at 14:52
add a comment |
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