<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=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Feb 11, 2019, at 11:38 AM, Olivier Giroux via libcxx-dev <<a href="mailto:libcxx-dev@lists.llvm.org" class="">libcxx-dev@lists.llvm.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Playing Devil’s advocate, it’s possible there are potential users for a Freestanding library who are stuck on old compilers thanks to C++-hostile vendors. I’m willing to put the effort in for the greater good there.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">But back to advocating against the Devil: the <atomic> header only works when specific builtins are provided, and those builtins are _<i class="">not</i>_ available on a compiler that has truly 0% support for C++11, because they appeared specifically to support <atomic>. Hence it only works in C++03 mode on a compiler that also has some kind of C++11 mode, so that’s a pretty narrow window of time that one has to be frozen into by the hostile vendor.</div></div></div></blockquote><div><br class=""></div><div><font face="Courier" class="">volatile</font> was supported before C++11 🤡</div><div><span style="font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class=""><br class=""></span></div><div><span style="font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class="">More seriously: that</span><span style="font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class="">’s an extremely compelling argument to justify </span><i style="font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class="">not</i><font face="Calibri, sans-serif" style="caret-color: rgb(0, 0, 0);" class=""> supporting </font><font face="Courier" style="caret-color: rgb(0, 0, 0);" class=""><atomic></font><font face="Calibri, sans-serif" style="caret-color: rgb(0, 0, 0);" class=""> before C++11: there’s no way the compiler supports the required atomic builtins and doesn’t support C++11.</font></div><div><font face="Calibri, sans-serif" style="caret-color: rgb(0, 0, 0);" class=""><br class=""></font></div><div><font face="Calibri, sans-serif" style="caret-color: rgb(0, 0, 0);" class="">It would be odd for a codebase to purposefully be stuck in C++03 on a recent compiler, yet choose to use </font><font face="Courier" style="caret-color: rgb(0, 0, 0);" class=""><atomic></font><span style="caret-color: rgb(0, 0, 0);" class=""><font face="Calibri, sans-serif" class="">: before C++11 people had their own implementation of atomic using inline assembly, so I expect</font></span><font face="Calibri, sans-serif" style="caret-color: rgb(0, 0, 0);" class=""> </font><font face="Courier" style="caret-color: rgb(0, 0, 0);" class=""><atomic></font><font face="Calibri, sans-serif" class=""><span style="caret-color: rgb(0, 0, 0);" class=""> is the last thing to change in codebases upgrading to C++11 because whatever inline assembly they had before probably works fine and has oddly (and scarily) different semantics from </span></font><font face="Courier" style="caret-color: rgb(0, 0, 0);" class=""><atomic></font><font face="Calibri, sans-serif" style="caret-color: rgb(0, 0, 0);" class="">.</font></div><div><span style="font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class=""><br class=""></span></div><div><span style="font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class=""><br class=""></span></div><div><span style="font-size: 11pt; font-family: Calibri, sans-serif; caret-color: rgb(0, 0, 0);" class=""> </span></div><blockquote type="cite" class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(181, 196, 223); padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class=""><span style="font-size: 12pt;" class="">From:<span class="Apple-converted-space"> </span></span></b><span style="font-size: 12pt;" class=""><<a href="mailto:ldionne@apple.com" class="">ldionne@apple.com</a>> on behalf of Louis Dionne <<a href="mailto:ldionne@apple.com" class="">ldionne@apple.com</a>><br class=""><b class="">Date:<span class="Apple-converted-space"> </span></b>Monday, February 11, 2019 at 11:32 AM<br class=""><b class="">To:<span class="Apple-converted-space"> </span></b>Eric Fiselier <<a href="mailto:eric@efcs.ca" class="">eric@efcs.ca</a>><br class=""><b class="">Cc:<span class="Apple-converted-space"> </span></b>Olivier Giroux <<a href="mailto:OGiroux@nvidia.com" class="">OGiroux@nvidia.com</a>>, "<a href="mailto:libcxx-dev@lists.llvm.org" class="">libcxx-dev@lists.llvm.org</a>" <<a href="mailto:libcxx-dev@lists.llvm.org" class="">libcxx-dev@lists.llvm.org</a>><br class=""><b class="">Subject:<span class="Apple-converted-space"> </span></b>Re: [libcxx-dev] What C++03 support should <atomic> have?<o:p class=""></o:p></span></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Feb 10, 2019, at 17:11, Eric Fiselier via libcxx-dev <<a href="mailto:libcxx-dev@lists.llvm.org" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Libc++ is a C++11 STL implementation that tolerates C++03 compilers.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">If a feature can be reasonably implemented in C++03, then we provide it.<o:p class=""></o:p></div></div></div></div></blockquote><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">It can be implemented in C++03, however there will be a visible code complexity cost in doing so with Olivier's patch (mostly because of the lack of lambdas).<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""><br class=""><o:p class=""></o:p></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><atomic> is one example, <thread>, <unordered_map> and `std::shared_ptr` are others.<o:p class=""></o:p></div></div></div></div></blockquote><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Yes, but this was decided in a time where not many compilers supported C++11 properly, right? 8 years later, we have many compilers supporting C++11 properly.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I suspect the number of people that use a recent libc++ with a compiler that does not support C++11 is very, very close to 0. One would have to deliberately update libc++ while keeping the compiler old, and then point the compiler to the updated libc++ headers manually. Additionally, the number of people that are in that setup AND that want to use std::atomic is likely to be even smaller.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I have an impression that we might be making our lives harder just to provide something that nobody cares about. Is there a common use-case of libc++ I'm missing here? Maybe some Linux distribution doing something funky that makes the old-compiler-with-new-libc++ more widely used than I imagine?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Unless we have a reason to do otherwise, I'd vote for not caring about C++03 support in <atomic>.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Louis<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""><br class=""><o:p class=""></o:p></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Wed, Feb 6, 2019 at 11:39 PM Olivier Giroux via libcxx-dev <<a href="mailto:libcxx-dev@lists.llvm.org" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>> wrote:<o:p class=""></o:p></div></div><blockquote style="border-style: none none none solid; border-left-width: 1pt; border-left-color: rgb(204, 204, 204); padding: 0in 0in 0in 6pt; margin-left: 4.8pt; margin-right: 0in;" class="" type="cite"><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Maybe another way to test these waters is to ask what is actually being _<i class="">tested_</i>?<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Olivier<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(181, 196, 223); padding: 3pt 0in 0in;" class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class=""><span style="font-size: 12pt;" class="">From:<span class="Apple-converted-space"> </span></span></b><span style="font-size: 12pt;" class=""><<a href="mailto:jfbastien@apple.com" target="_blank" style="color: purple; text-decoration: underline;" class="">jfbastien@apple.com</a>> on behalf of JF Bastien <<a href="mailto:jfbastien@apple.com" target="_blank" style="color: purple; text-decoration: underline;" class="">jfbastien@apple.com</a>><br class=""><b class="">Date:<span class="Apple-converted-space"> </span></b>Wednesday, February 6, 2019 at 11:21 AM<br class=""><b class="">To:<span class="Apple-converted-space"> </span></b>Olivier Giroux <<a href="mailto:OGiroux@nvidia.com" target="_blank" style="color: purple; text-decoration: underline;" class="">OGiroux@nvidia.com</a>><br class=""><b class="">Cc:<span class="Apple-converted-space"> </span></b>"<a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>" <<a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>><br class=""><b class="">Subject:<span class="Apple-converted-space"> </span></b>Re: [libcxx-dev] What C++03 support should <atomic> have?</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Doing atomics before 11 was pretty wild… So I understand that people using an old C++ want some nice atomics. At the same time… They really should update to C++11 or later.<o:p class=""></o:p></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">What does libc++ try to do with new library features on old languages? Seems easy enough so support most of say optional or variant (without CTAD) before C++17. Is this done consistently? And how far back, do we even try to support C++98?<span class="Apple-converted-space"> </span><o:p class=""></o:p></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">It seems like we can be nice where it’s easy, but at some point in time are we just supporting stuff nobody cares about?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div><div class=""><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p class=""> </o:p></p><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class="" type="cite"><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Feb 5, 2019, at 9:33 PM, Olivier Giroux via libcxx-dev <<a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Sorry, that quote is from my patch, but there’s identical code elsewhere in the file. I swear!<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Olivier<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(181, 196, 223); padding: 3pt 0in 0in;" class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class=""><span style="font-size: 12pt;" class="">From:<span class="gmail-m-2222480216075481894apple-converted-space"> </span></span></b><span style="font-size: 12pt;" class="">libcxx-dev <<a href="mailto:libcxx-dev-bounces@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev-bounces@lists.llvm.org</a>> on behalf of Olivier Giroux via libcxx-dev <<a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>><br class=""><b class="">Reply-To:<span class="gmail-m-2222480216075481894apple-converted-space"> </span></b>Olivier Giroux <<a href="mailto:OGiroux@nvidia.com" target="_blank" style="color: purple; text-decoration: underline;" class="">OGiroux@nvidia.com</a>><br class=""><b class="">Date:<span class="gmail-m-2222480216075481894apple-converted-space"> </span></b>Tuesday, February 5, 2019 at 9:33 PM<br class=""><b class="">To:<span class="gmail-m-2222480216075481894apple-converted-space"> </span></b>"<a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>" <<a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a>><br class=""><b class="">Subject:<span class="gmail-m-2222480216075481894apple-converted-space"> </span></b>[libcxx-dev] What C++03 support should <atomic> have?</span><o:p class=""></o:p></div></div></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">There is a little bit of code in this file that suggests it once worked in C++03.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Like so:<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 13.5pt; background-color: rgb(30, 30, 30);" class=""><span style="font-size: 10pt; font-family: Consolas; color: rgb(197, 134, 192);" class="">#ifndef</span><span class="gmail-m-2222480216075481894apple-converted-space"><span style="font-size: 10pt; font-family: Consolas; color: rgb(86, 156, 214);" class=""> </span></span><span style="font-size: 10pt; font-family: Consolas; color: rgb(220, 220, 170);" class="">_LIBCPP_CXX03_LANG</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 13.5pt; background-color: rgb(30, 30, 30);" class=""><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class=""> <span class="gmail-m-2222480216075481894apple-converted-space"> </span></span><span style="font-size: 10pt; font-family: Consolas; color: rgb(220, 220, 170);" class="">__cxx_atomic_type</span><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class="">() _NOEXCEPT =<span class="gmail-m-2222480216075481894apple-converted-space"> </span></span><span style="font-size: 10pt; font-family: Consolas; color: rgb(197, 134, 192);" class="">default</span><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class="">;</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 13.5pt; background-color: rgb(30, 30, 30);" class=""><span style="font-size: 10pt; font-family: Consolas; color: rgb(197, 134, 192);" class="">#else</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 13.5pt; background-color: rgb(30, 30, 30);" class=""><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class=""> <span class="gmail-m-2222480216075481894apple-converted-space"> </span></span><span style="font-size: 10pt; font-family: Consolas; color: rgb(220, 220, 170);" class="">__cxx_atomic_type</span><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class="">() _NOEXCEPT :<span class="gmail-m-2222480216075481894apple-converted-space"> </span></span><span style="font-size: 10pt; font-family: Consolas; color: rgb(220, 220, 170);" class="">__a_value</span><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class="">() {}</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 13.5pt; background-color: rgb(30, 30, 30);" class=""><span style="font-size: 10pt; font-family: Consolas; color: rgb(197, 134, 192);" class="">#endif</span><span class="gmail-m-2222480216075481894apple-converted-space"><span style="font-size: 10pt; font-family: Consolas; color: rgb(212, 212, 212);" class=""> </span></span><span style="font-size: 10pt; font-family: Consolas; color: rgb(106, 153, 85);" class="">// _LIBCPP_CXX03_LANG</span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Is that an actual design goal? It looks like it’s broken right now.<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Do we maintain this, or do we bump the assumed default to C++11?<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Thanks for your guidance,<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Olivier<o:p class=""></o:p></div></div><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div class="MsoNormal" align="center" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center;"><hr size="0" width="72%" align="center" class=""></div></div><div class=""><div class=""><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message.<o:p class=""></o:p></div></div></div><div class=""><div class="MsoNormal" align="center" style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center;"><hr size="0" width="72%" align="center" class=""></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 9pt; font-family: Helvetica;" class="">_______________________________________________<br class="">libcxx-dev mailing list<br class=""><a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a><br class=""><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev" target="_blank" style="color: purple; text-decoration: underline;" class="">https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev</a></span><o:p class=""></o:p></div></div></blockquote></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div></div></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">_______________________________________________<br class="">libcxx-dev mailing list<br class=""><a href="mailto:libcxx-dev@lists.llvm.org" target="_blank" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a><br class=""><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev" target="_blank" style="color: purple; text-decoration: underline;" class="">https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev</a><o:p class=""></o:p></div></blockquote></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">_______________________________________________<br class="">libcxx-dev mailing list<br class=""><a href="mailto:libcxx-dev@lists.llvm.org" style="color: purple; text-decoration: underline;" class="">libcxx-dev@lists.llvm.org</a><br class=""><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev" class="">https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev</a><o:p class=""></o:p></div></div></blockquote></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""><br class=""><o:p class=""></o:p></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">libcxx-dev mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""><a href="mailto:libcxx-dev@lists.llvm.org" class="">libcxx-dev@lists.llvm.org</a></span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class=""><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev" class="">https://lists.llvm.org/cgi-bin/mailman/listinfo/libcxx-dev</a></span></blockquote></div><br class=""></body></html>