Solidity Blog

Solidity 0.8.0 is a breaking release of the Solidity compiler and language. Some of the new features of this release have been elaborated in the 0.8.x preview release post. Please consider the preview release binary superseded and do not use it anymore. [Read More]

Solidity v0.7.6 adds better support for calldata types. Furthermore, the fallback function can now have a parameter and explicitly return data. [Read More]

Today we are launching the Solidity Developer Survey 2020. It is the first time we share a proper language survey and we hope to turn this into an annual tradition moving forward. You might remember the small feedback survey we did this year as part of the Solidity Summit registration in which we asked you for the most liked and dreaded Solidity features. If you’re curious to revisit the results of that click here. [Read More]

After thorough assessment of all submissions, we are happy to share the winners of this year’s Underhanded Solidity Contest! If you are not familiar with it, please read the announcement from September. Before we dive into the winning submissions, we’d like to thank all participants for taking part. In total, we received 16 qualifying submissions which you can find in this repo. All 16 submissions are eligible for a “qualified submission” Underhanded Solidity POAP NFT - winners will receive an... [Read More]

Solidity v0.7.5 adds the ability so select the ABI coder via pragma abicoder v1 and pragma abicoder v2 in preparation for making ABI coder v2 the default for 0.8.0 and introduces --experimental-via-ir which compiles via the new experimental Yul-based compiler pipeline. [Read More]

We hosted our very first Solidity team AMA on Reddit last week! We would like to take the opportunity to summarize the most interesting and most upvoted questions & answers in this post. If you are interested in going through the full AMA thread you can do so here. [Read More]

With the Solidity 0.8.x series being just around the corner, we would like to provide insights into the upcoming breaking changes that will come with it. We want to provide a preview release binary for everyone to try out so that you can give your feedback. The main change for 0.8.x is the switch to checked arithmetic operations by default. This means that x + y will throw an exception on overflow. In other words: You will not need SafeMath... [Read More]

Solidity v0.7.4 fixes a storage corruption bug of medium severity. To learn more about the bug and to check if your contract is vulnerable please read this post with further details about the bug. The bug has been reported by John Toman of the Certora development team. Additionally, v0.7.4 adds constants at file-level. [Read More]

On October 14, 2020, a bug in the Solidity code generator was reported by John Toman of the Certora development team. Certora’s bug disclosure post can be found here. The bug is fixed with Solidity version 0.7.4 released on October 19, 2020. The bug is present in all prior versions of Solidity. We assigned the bug a severity level of “medium”. [Read More]

On September 17, 2020, a bug in the Solidity code generator was found. The bug is fixed with version 0.7.3 released on October 7, 2020. The bug is present in all prior versions of Solidity. We assigned the bug a severity level of “medium”. [Read More]