C++ User Group Meetings in June 2018

by Jens Weller

The monthly overview of upcoming C++ User Group meetings. Join a C++ User Group near you, or learn how to start your own!

There are 4 new C++ User Groups: Houston, Prague, Cluj, New York.

Hello CMake!

by Arne Mertz

Since I have mentioned CMake in a handful of past blog posts, it is time to give a short introduction for those that don’t know it yet.

CMake is one of the most popular build systems for C++ out there. One of the main reasons probably is that it is cross-platform: It does not build the project itself but operates a platform-specific system. That means it can generate Makefiles, ninja-build files, or project files for Visual Studio or Xcode, to name just a few...

Default-constructibility is overrated

by Arthur O’Dwyer

The Ranges Technical Specification includes very many concept definitions (based on the Concepts TS), including for example Integral and Predicate. It also provides a concept named Regular which implements a variation on the “Regular” concept described by Alexander Stepanov in his paper '’Fundamentals of Generic Programming’’ (1998)...

Back to Aspen: C++Now trip report by JetBrains

by Anastasia Kazakova and Phil Nash

In May we were back to Aspen for C++Now 2018. This year the weather in Aspen was very friendly (no snowstorm like in 2017) and we were enjoying every single day of the event.

Quick Update on C++ Compiler Bug Hunt

by No Bugs" Hare

Some time ago, I wrote a post about kscope – mini-project on finding and reporting bugs in modern C++ compilers. The point was that there is a way to use C++ facilities to make C++ code self-mutating (more strictly – pseudo-randomized using externally supplied ITHARE_KSCOPE_SEED macro), which allows finding certain classes of bugs during randomized testing. In the previous post, I wrote about 12 bugs reported, with 3 of them already fixed. I have to admit that since that point, I didn’t have as much time as I’d like to spend on kscope; still, 3 more bugs were reported (2 of them being codegen bugs) – and quite a few were fixed (fortunately, bugfixing is one thing which doesn’t require my participation <wink />)...

[[trivial_abi]] 101

by Arthur O’Dwyer

Finally, a blog post on [[trivial_abi]]!

This is a brand-new feature in Clang trunk, new as of about February 2018. It is a vendor extension to the C++ language — it is not standard C++, it isn’t supported by GCC trunk, and there is no active WG21 proposal to add it to the standard C++ language, as far as I know...

Submission Reminder

by cppcon

The deadline for session submissions is only days away. Review the Call for Submissions and make your submission soon. You can run your ideas by the Submission Advice mailing list, but you must hurry for this. The advice list gets very busy as the deadline draws near...

March 2018 ISO C++ Meeting Trip Report (SG1: Concurrency and Parallelism)

by Thomas Rodgers

This year’s Winter ISO C++ Standard Committee meeting was held in March in Jacksonville, Florida. A number of larger features, for which there is substantial interest but which are also difficult to get right, were discussed:

• Concepts, along with Concept types from the Ranges TS; see P0898 and n4685
• Modules; see n4689
• Coroutines; see n4723
• Networking; see n4711
• Executors; see p0443

span lite: single-file header-only version of a C++20-like span for C++98, C++11 and later

by Martin Moene

span lite is a single-file header-only library to provide a bounds-safe view for sequences of objects. The library provides a C++20-like span for use with C++98 and later. If available, std::span is used, unless configured otherwise...

Announcing a single C++ library manager for Linux, macOS and Windows: Vcpkg

by Eric Mittelette

At Microsoft, the core of our vision is “Any Developer, Any App, Any Platform” and we are committed to bringing you the most productive development tools and services to build your apps across all platforms. With this in mind, we are thrilled to announce today the availability of vcpkg on Linux and MacOS. This gives you immediate access to the vcpkg catalog of C++ libraries on two new platforms, with the same simple steps you are familiar with on Windows and UWP today...