<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello folks (except fans of April 1st: this is <i class="">not</i> a joke),<div class=""><br class=""></div><div class="">We discussed <a href="http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html" class="">migrating past C++11</a> recently and got consensus. This led us to <a href="https://reviews.llvm.org/D57264" class="">bump our minimum toolchain requirements</a> to a point where C++14 was supported by all compilers. Following <a href="http://llvm.org/docs/DeveloperPolicy.html#toolchain" class="">our policy</a>, I’m now suggesting that we make this official by creating a patch which will:</div><div class=""><br class=""></div><div class=""><ul class="MailOutline"><li class="">Update <a href="http://llvm.org/docs/CodingStandards.html#c-standard-versions" class="">the C++ standard version</a> to C++14, allowing the usage of the following language and library features:</li><ul class=""><li class=""><a href="https://wg21.link/N3472" class="">Binary literals</a>:</li><ul class=""><li class="">Without restrictions.</li></ul><li class=""><a href="https://wg21.link/N3638" class="">decltype(auto)</a>, Return type deduction for normal functions:</li><ul class=""><li class=""><a href="http://llvm.org/docs/CodingStandards.html#use-auto-type-deduction-to-make-code-more-readable" class="">As with auto</a>, only where it makes code more readable.</li></ul><li class=""><a href="https://wg21.link/N3648" class="">Initialized/Generalized lambda captures (init-capture)</a>:</li><ul class=""><li class="">Without restriction.</li></ul><li class=""><a href="https://wg21.link/N3649" class="">Generic (polymorphic) lambda expressions</a>:</li><ul class=""><li class=""><a href="http://llvm.org/docs/CodingStandards.html#use-auto-type-deduction-to-make-code-more-readable" class="">As with auto</a>, only where it makes code more readable.</li></ul><li class=""><a href="https://wg21.link/N3651" class="">Variable templates</a>:</li><ul class=""><li class="">Without restriction.</li></ul><li class=""><a href="https://wg21.link/N3653" class="">Member initializers and aggregates (NSDMI)</a>:</li><ul class=""><li class="">Without restriction.</li></ul><li class="">More constexpr everywhere:</li><ul class=""><li class="">Without restriction.</li></ul><li class=""><a href="https://wg21.link/N3781" class="">Single quote as digit separator</a>:</li><ul class=""><li class="">Not allowed.</li></ul><li class=""><a href="https://wg21.link/N3654" class="">std::quoted</a>:</li><ul class=""><li class="">Without restriction.</li></ul><li class=""><a href="https://wg21.link/N3668" class="">std::exchange</a>:</li><ul class=""><li class="">Without restriction.</li></ul></ul><li class="">Change the minimum toolchain requirement from a “soft-error” to a “hard-error” such that <font face="Courier" class="">CheckCompilerVersion.cmake</font> now says:</li><ul class=""><li class=""><font face="Courier" class="">set(GCC_MIN 5.1)<br class="">set(GCC_SOFT_ERROR 5.1)<br class="">set(CLANG_MIN 3.5)<br class="">set(CLANG_SOFT_ERROR 3.5)<br class="">set(APPLECLANG_MIN 6.0)<br class="">set(APPLECLANG_SOFT_ERROR 6.0)<br class="">set(MSVC_MIN 19.1)<br class="">set(MSVC_SOFT_ERROR 19.1)</font></li></ul><li class="">The above makes <font face="Courier" class="">LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN</font> useless until we try upgrading toolchain versions again.</li><li class="">Use C++14 in the code somewhere.</li></ul></div><div class=""><br class=""></div><div class="">When we last discussed this we said we’d revisit at the end of March 2019 and see if everyone was able to upgrade their toolchains. Remember that by now any build of LLVM with an old toolchain has received a “soft-error” which people had to read and disable using a CMake argument. This includes anyone building LLVM 8 because the change made it to the branch. There were plenty of discussions on Phabricator, on the mailing lists, and at the dev meeting. The was <a href="http://lists.llvm.org/pipermail/llvm-dev/2019-February/130117.html" class="">a PSA</a> and emails were sent to all bot maintainers with older bots. At this point there’s no way that you didn’t know that you needed to upgrade you toolchain.</div><div class=""><br class=""></div><div class="">This would mean that LLVM 9 would require a newer toolchain.</div><div class=""><br class=""></div><div class="">Is anyone not ready for this move? If so, what does your timing look like?</div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">JF</div><div class=""><br class=""></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 22, 2019, at 1:44 PM, JF Bastien via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" class="">llvm-dev@lists.llvm.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello fans of the <font face="Courier" class="">auto</font> keyword!<div class=""><br class=""></div><div class="">We now have <a href="https://reviews.llvm.org/rL351765" class="">a policy on how LLVM toolchains get updated</a>! Let’s put that policy to good use, and talk about how we’ll move all monorepo projects past C++11.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><b class="">Previous Discussions</b></div><div class=""><ul class=""><li class="">LLVM dev meeting 2018 BoF "<a href="http://llvm.org/devmtg/2018-10/talk-abstracts.html#bof3" class="">Migrating to C++14, and beyond!</a>"</li><li class=""><a href="http://lists.llvm.org/pipermail/llvm-dev/2018-May/123238.html" class="">A Short Policy Proposal Regarding Host Compilers</a></li><li class=""><a href="http://lists.llvm.org/pipermail/llvm-dev/2018-May/123182.html" class="">Using C++14 code in LLVM (2018)</a></li><li class=""><a href="http://lists.llvm.org/pipermail/llvm-dev/2017-October/118673.html" class="">Using C++14 code in LLVM (2017)</a></li><li class=""><a href="http://lists.llvm.org/pipermail/llvm-dev/2016-October/105483.html" class="">Using C++14 code in LLVM (2016)</a></li><li class=""><a href="http://llvm.org/D47073" class="">Document and Enforce new Host Compiler Policy</a></li><li class=""><a href="http://llvm.org/D46723" class="">Require GCC 5.1 and LLVM 3.5 at a minimum</a></li></ul></div><div class=""><b class=""><br class=""></b></div><div class=""><b class="">Migrate to what?</b></div><div class=""><br class=""></div><div class="">I’m only proposing that we migrate to C++14 for now. If you want to propose C++17, please do the work required by the policy. In particular, document which toolchains this would require, and what features you’d unlock. As per policy, I want to start soft-errors when building LLVM 8, so that LLVM 9 can use more than C++11.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><b class="">Timeline</b></div><div class=""><br class=""></div><div class="">At the LLVM dev meeting BoF, the room already agreed to move past C++11. Late March 2019 was proposed as a time when we’d start migrating, pending large contributors’ readiness. I’m sticking to that timeline, we’ll see if everyone is ready at the end of March. I nonetheless want to get the soft-errors into the LLVM 8 branch so that we give a sufficient heads-up to developers who only compile releases.</div><div class=""><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><b class="">Upsides</b></div><div class=""><br class=""></div><div class="">One clear upside of dropping older toolchains: they don’t even support C++11 very well. We have a handful of workarounds left in ADT (particularly around type traits) and I’d like to get rid of them.</div></div><div class=""><br class=""></div><div class="">The compiler versions I propose allow us to use all of C++14, which includes:</div><div class=""><ul class="MailOutline"><li class=""><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3472.pdf" class="">Binary literals</a></li><li class=""><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3638.html" class="">decltype(auto), Return type deduction for normal functions</a></li><li class=""><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3648.html" class="">Initialized/Generalized lambda captures (init-capture)</a></li><li class=""><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3649.html" class="">Generic (polymorphic) lambda expressions</a></li><li class=""><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3651.pdf" class="">Variable templates</a></li><li class=""><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3653.html" class="">Member initializers and aggregates (NSDMI)</a></li><li class="">A bunch of new constexpr language and library features</li><li class="">Various other language and library features</li></ul></div><div class="">See <a href="https://en.cppreference.com/w/cpp/compiler_support" class="">CppReference</a> for details.</div><div class=""><br class=""></div><div class="">Of these, I think polymorphic lambdas are the big feature. Of course, just like Almost Always Auto, we should use such things only where it makes sense.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><b class="">Toolchains</b></div><div class=""><br class=""></div><div class="">We’re currently mandating:</div><div class=""><ul class=""><li class="">Clang 3.1 (<i class="">released 2012/05</i>)</li><li class="">Apple Clang 3.1 (<i class="">released 2012/05</i>)</li><li class="">GCC 4.8 (<i class="">released 2013/03</i>)</li><li class="">Visual Studio 2015 (Update 3) (<i class="">released 2016/06</i>)</li></ul></div><div class="">I propose instead:</div><div class=""><ul class=""><li class="">Clang 3.5 (<i class="">released 2014/07</i>) to get <font face="Courier" class="">-std=c++14</font> instead of <font face="Courier" class="">-std=c++1y</font></li><li class="">Apple Clang 6.0 (<i class="">released 2014/07</i>) to match clang 3.5</li><li class="">GCC 5.1 (<i class="">released 2015/04</i>) because C++14 mostly came to be in GCC 5</li><li class="">Visual Studio 2017 (<i class="">released 2017/03</i>) so that we get extended constexpr and NSDMI</li></ul></div><div class="">Version information from:</div><div class=""><ul class=""><li class="">Clang <a href="http://releases.llvm.org/" class="">http://releases.llvm.org</a></li><li class="">Apple clang <a href="https://trac.macports.org/wiki/XcodeVersionInfo" class="">https://trac.macports.org/wiki/XcodeVersionInfo</a> and <a href="https://en.wikipedia.org/wiki/Xcode#Latest_versions" class="">https://en.wikipedia.org/wiki/Xcode#Latest_versions</a></li><li class="">GCC <a href="https://gcc.gnu.org/releases.html" class="">https://gcc.gnu.org/releases.html</a></li><li class="">MSVC <a href="https://en.wikipedia.org/wiki/Microsoft_Visual_Studio" class="">https://en.wikipedia.org/wiki/Microsoft_Visual_Studio</a> and <a href="https://docs.microsoft.com/en-us/cpp/visual-cpp-language-conformance" class="">https://docs.microsoft.com/en-us/cpp/visual-cpp-language-conformance</a></li></ul></div><div class=""><br class=""></div><div class="">My previous attempts pointed out that WebKit / Chromium / Firefox are all past C++11 (WebKit is <a href="https://lists.webkit.org/pipermail/webkit-dev/2018-March/029922.html" class="">moving to C++17</a> (from C++14), Chromium <a href="https://groups.google.com/a/chromium.org/d/msg/cxx/ow7hmdDm4yw/eV6KWL2yAQAJ" class="">started moving to C++14</a>, Firefox uses <a href="https://developer.mozilla.org/en-US/docs/Mozilla/Using_CXX_in_Mozilla_code" class="">some C++14</a>). This means that platforms which distribute a modern browser can already bootstrap a browser. That’s a nice datapoint, but isn’t sufficient for platforms which compile / use LLVM (especially as a library).</div><div class=""><br class=""></div><div class="">Here’s a table from the LLVM dev meeting BoF detailing version info for distros that seemed relevant:</div><div class=""><br class=""></div><div class=""><table cellspacing="0" cellpadding="0" style="border-collapse: collapse" class="">
<tbody class="">
<tr class="">
<td valign="top" style="width: 43.0px; height: 13.0px; background-color: #f19e0d; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">Release</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 13.0px; background-color: #f19e0d; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">Distro</b></font></div>
</td>
<td valign="top" style="width: 56.0px; height: 13.0px; background-color: #f19e0d; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">Compiler</b></font></div>
</td>
<td valign="top" style="width: 60.0px; height: 13.0px; background-color: #f19e0d; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">C++14 lang</b></font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2003-10</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">RHEL 3</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 3.2</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2005-02</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">RHEL 4</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 3.4</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2007-03</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">RHEL 5</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 4.1</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2010-11</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">RHEL 6</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 4.4</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2013-05</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Debian 7 wheezy</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 4.7.2</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2013-12</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">RHEL 7</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 4.8</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2015-04</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Debian 8 jessie</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 4.9.2</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2015-05</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 5.7</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 3.5</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2015-10</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 5.8</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 3.5</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2016-03</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 5.9</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 3.5</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2016-04</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Ubuntu 14.04</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 4.8.2</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">❌</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2016-04</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Ubuntu 16.04</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 5.3.1</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2016-09</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 6.0</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 3.8</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2017-04</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 6.1</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 4.0.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2017-06</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Debian 9 stretch</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 6.3.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2017-10</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Ubuntu 17.10</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 7.2.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2017-10</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 6.2</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 5.0.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2018-04</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Ubuntu 18.04</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 7.3.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2018-04</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">OpenBSD 6.3</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">LLVM 5.0.1</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2018-10</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Ubuntu 18.10</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 8.1.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
<tr class="">
<td valign="top" style="width: 43.0px; height: 18.0px; background-color: #717b89; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" color="#ffffff" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(255, 255, 255); -webkit-text-stroke-color: rgb(255, 255, 255);" class=""><b class="">2018-??</b></font></div>
</td>
<td valign="top" style="width: 86.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">Debian 10 buster</font></div>
</td>
<td valign="top" style="width: 56.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px;" class=""><font face="Helvetica Neue" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Helvetica Neue"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">GCC 8.1.0</font></div>
</td>
<td valign="top" style="width: 60.0px; height: 18.0px; background-color: #cccccc; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #000000 #000000 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px" class=""><div style="margin: 0px; text-align: center;" class=""><font face="Apple Color Emoji" style="font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Apple Color Emoji"; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(255, 255, 255);" class="">✅</font></div>
</td>
</tr>
</tbody>
</table></div><div class=""><br class=""></div><div class="">The data comes from the following sources:</div><div class=""><ul class=""><li class=""><a href="https://en.cppreference.com/w/cpp/compiler_support" class="">https://en.cppreference.com/w/cpp/compiler_support</a></li><li class=""><a href="https://packages.ubuntu.com/search?keywords=gcc" class="">https://packages.ubuntu.com/search?keywords=gcc</a></li><li class=""><a href="https://packages.debian.org/search?keywords=gcc" class="">https://packages.debian.org/search?keywords=gcc</a></li><li class=""><a href="https://access.redhat.com/solutions/19458" class="">https://access.redhat.com/solutions/19458</a></li><li class=""><a href="https://www.openbsd.org/63.html" class="">https://www.openbsd.org/63.html</a></li><li class=""><a href="https://en.wikipedia.org/wiki/Clang" class="">https://en.wikipedia.org/wiki/Clang</a></li><li class=""><a href="https://releases.llvm.org/" class="">https://releases.llvm.org</a></li></ul></div><div class="">I haven’t documented FreeBSD / NetBSD / Fedora / MacOS / MSVC, and nobody complained at the BoF. I’d like to understand if we should care about documenting these: ideally the toolchain update policy would list which platforms need to be considered and how far back in time is relevant.</div><div class=""><br class=""></div><div class="">Thanks,</div><div class=""><br class=""></div><div class="">JF</div></div></div></blockquote><br class=""></div></div></body></html>