|  | <!DOCTYPE html> | 
|  |  | 
|  | <!-- | 
|  | Be aware: modifying this file in any way will cause a pop-up to users telling them the privacy policy has changed. | 
|  | --> | 
|  |  | 
|  | <html lang="en"> | 
|  | <body> | 
|  |  | 
|  | <!-- | 
|  | No need to update this! It's done by the CLI build process | 
|  | --> | 
|  | <time id="changed-date"></time> | 
|  | <h2>Compiler Explorer Privacy Policy</h2> | 
|  |  | 
|  | <p> | 
|  | Thanks for your interest in what Compiler Explorer does with your data. Data protection is really | 
|  | important to the Compiler Explorer team, and we want to be very clear about what we do with your data. | 
|  | </p> | 
|  |  | 
|  | <h3>Who we are</h3> | 
|  |  | 
|  | <p> | 
|  | Compiler Explorer was created by and is primarily administrated by | 
|  | <a href="mailto:matt@godbolt.org">Matt Godbolt</a>, | 
|  | along with a number of volunteers (including, but not limited to those listed in our "<a | 
|  | href="https://github.com/compiler-explorer/compiler-explorer/blob/master/AUTHORS.md" target="_blank" | 
|  | rel="noreferrer noopener">Authors</a>" documentation). | 
|  | It is run on a best-effort basis, and is not a commercial product. We do our best | 
|  | to keep your data safe, but welcome help from the community: See our | 
|  | <a href="https://github.com/compiler-explorer/compiler-explorer" target="_blank" | 
|  | rel="noreferrer noopener">GitHub project page</a> if you wish to help. | 
|  | </p> | 
|  |  | 
|  | <h3>Your data</h3> | 
|  |  | 
|  | <p> | 
|  | In order to process compilation and execution requests, your browser sends the source code you typed in the editor | 
|  | window along with your chosen compiler and options to the Compiler Explorer servers. There, the source code is | 
|  | written to disk and your chosen compiler is invoked on it. If your request was to have your code executed, the | 
|  | resulting executable is run. The outputs from compilation and execution are processed and sent back to your web | 
|  | browser, where they're shown. Shortly after this process completes, your source code is deleted from disk. If, in | 
|  | processing your query, an issue with Compiler Explorer is found, your code may be kept for up to a week in order to | 
|  | help debug and diagnose the problem. Only the Compiler Explorer team will have access to your code, and only for the | 
|  | purposes of debugging the site: we will never share your code with anyone. | 
|  | </p> | 
|  |  | 
|  | <p> | 
|  | If you choose a Microsoft compiler, then your code may be sent to and compiled on a machine administrated by | 
|  | Microsoft. Such code is covered by the <a href="https://privacy.microsoft.com/en-US/" target="_blank">Microsoft | 
|  | Privacy Policy.</a> | 
|  | </p> | 
|  |  | 
|  | <p> | 
|  | The source code and options are also subject to a one-way hash, which is used to cache the results to speed up | 
|  | subsequent compilations of the same code. The cache is in-memory and on-disk. It's impossible to reconstruct the | 
|  | source code from the hash; but the resulting assembly code or binary output (the compilation result) is stored as | 
|  | plain text. There's no way to enumerate the in-memory cache contents. In exceptional cases, administrator members of | 
|  | the Compiler Explorer team may be able to enumerate the disk caches and retrieve the compilation output, but with no | 
|  | way to trace it back to the source code. | 
|  | </p> | 
|  |  | 
|  | <p> | 
|  | In short: your source code is stored in plaintext for the minimum time feasible to be able to process your request. | 
|  | After that, it is discarded and is inaccessible. In very rare cases your code may be kept for a little longer (at | 
|  | most a week) to help debug issues in Compiler Explorer. | 
|  | </p> | 
|  |  | 
|  | <h4>Short links</h4> | 
|  |  | 
|  | <p> | 
|  | If you choose to share your code using the "Share" dropdown, then the user interface state including the source code | 
|  | is stored. For a "Full" link, this information is encoded into the URL as a URL hash (e.g. | 
|  | <code>https://godbolt.org/#ui_state_and_code</code>). For short URLs, the interface state is stored on Compiler | 
|  | Explorer's servers, and a shortened name uniquely referring to this data is returned. The shortened name comes from | 
|  | a secure hash of the state, and without knowing the name it is infeasible to access the data. Only Compiler Explorer | 
|  | administrators can access this data directly . Obfuscated IP addresses and creation time are stored alongside this | 
|  | data, to enable spam detection. Links of this form look like <code>https://godbolt.org/z/SHORTNAME</code>. | 
|  | </p> | 
|  |  | 
|  | <p> | 
|  | Prior to storing data itself, Compiler Explorer used an external URL shortening service | 
|  | (<a href="https://goo.gl/" target="_blank">goo.gl</a>) and the resulting short URL was rewritten as | 
|  | <code>https://godbolt.org/g/SHORTURLPART</code>. The storage for the user experience state in this case remains with | 
|  | the short URL provider, not Compiler Explorer. | 
|  | </p> | 
|  |  | 
|  | <h4>Web logs</h4> | 
|  |  | 
|  | <p> | 
|  | Compiler Explorer keeps web logs, which contain semi-anonymised IP addresses, but no other personally identifying | 
|  | information. When a long URL is clicked, the hash part of the URL is not sent to the server, so the user state | 
|  | (including the source code) is NOT exposed in the web log. If a user clicks a short URL, then the short form IS | 
|  | exposed in the web log (as <code>https://godbolt.org/g/SHORTURLPART</code>) and from this the source code can be | 
|  | retrieved. As such, if you create a short URL of your code, your source code and other user state can in principle | 
|  | be retrieved from the web log of Compiler Explorer. | 
|  | </p> | 
|  |  | 
|  | <p> | 
|  | In order to debug and diagnose Compiler Explorer, to help track down and block Denial of Service attacks, and to | 
|  | gather statistics about Compiler Explorer's performance and usage, the web logs are archived. These logs are kept | 
|  | for one month, after which they are permanently deleted. | 
|  | </p> | 
|  |  | 
|  | <h4>Executing your code</h4> | 
|  |  | 
|  | <p> | 
|  | For certain configurations, we may support executing the results of your compilation on the Compiler Explorer | 
|  | servers. Execution occurs in a heavily locked-down, isolated environment. We have made reasonable efforts to protect | 
|  | both the Compiler Explorer site and other concurrently-processed requests from information leakage due to rogue | 
|  | executions. | 
|  | </p> | 
|  |  | 
|  | <h4>Cookies</h4> | 
|  |  | 
|  | <p> | 
|  | Separately, Compiler Explorer uses small pieces of information stored on your computer: Cookies and Browser Local | 
|  | Storage. Cookies are only used with the user's permission, and are used with external analytics services (e.g. | 
|  | Google Analytics) to gather statistics on Compiler Explorer usage. This information is used to help the Compiler | 
|  | Explorer team plan for future updates and hardware upgrades in order to ensure the site remains stable and | 
|  | responsive. Local storage is used to remember user's settings, source code and user interface configuration, so that | 
|  | it's available when the user visits the Compiler Explorer site again. This information is not transmitted to | 
|  | Compiler Explorer, except as described above in order to fulfil the user's requests. There is a | 
|  | <a href="#cookies" rel="noreferrer noopener">separate document</a> covering more on this. Statistics tracking | 
|  | information is kept for 14 months, after which it is removed. | 
|  | </p> | 
|  |  | 
|  | <h3>Your choices</h3> | 
|  |  | 
|  | <p> | 
|  | Compiler Explorer is an open source project. If you are concerned about any of the data protection measures outlined | 
|  | above, or about what happens to your source code, you are encouraged to run your own local instance of Compiler | 
|  | Explorer. Instructions on how to do this are on the | 
|  | <a href="https://github.com/compiler-explorer/compiler-explorer" target="_blank" | 
|  | rel="noreferrer noopener">GitHub project page</a>. | 
|  | </p> | 
|  |  | 
|  | <h3>Compiler Explorer and the GDPR</h3> | 
|  |  | 
|  | <p> | 
|  | The Compiler Explorer team believes the Compiler Explorer site is compliant with the EU's General Data Protection | 
|  | Regulation (GDPR). Specifically, we store no personally identifying information, we anonymise the little data that | 
|  | we do have and we do not permanently store any user data. | 
|  | </p> | 
|  |  | 
|  | <h4>Name and Address of the controller</h4> | 
|  | <p> | 
|  | The Controller for the purposes of the General Data Protection Regulation (GDPR), other data protection laws | 
|  | applicable in Member states of the European Union and other provisions related to data protection is: | 
|  | </p> | 
|  |  | 
|  | <div> | 
|  | Matt Godbolt<br> | 
|  | 2626 Orrington Ave<br> | 
|  | Evanston IL 60201 USA<br> | 
|  | +1 312 792-7931<br> | 
|  | <a href="mailto:matt@godbolt.org">matt@godbolt.org</a> | 
|  | </div> | 
|  |  | 
|  | </body> | 
|  | </html> |