Rules

Each year, the ISO C++ standards committee and the Standard C++ Foundation run this survey to stay in touch with the worldwide C++ community.

Like every major GCC release, this version will bring many additions, improvements, bug fixes, and new features. GCC 15 is already the system compiler in Fedora 42. Red Hat Enterprise Linux (RHEL) users will get GCC 15 in the Red Hat GCC Toolset. It's also possible to try GCC 15 on Compiler Explorer and similar pages.

This article describes only new features implemented in the C++ front end; it does not discuss developments in the C++ language itself.

The default dialect in GCC 15 is still -std=gnu++17. You can use the -std=c++23 or -std=gnu++23 command-line options to enable C++23 features, and similarly for C++26 and others.

I work at Red Hat on GCC, the GNU Compiler Collection. I spent most of the past year working on how GCC emits diagnostics (errors and warnings) in the hope of making it easier to use. Let's take a look at 6 improvements to look forward to in the upcoming GCC 15.

1. Prettier execution paths
2. A new look for C++ template errors
3. Machine-readable diagnostics
4. An easier transition to C23
5. A revamped color scheme
6. libgdiagnostics

I am trying to calculate a motor position from an encoder, however that does not really matter. I just checked godbolt.org to see if my inline function compiled into a single multiplication and was pretty disappointed that it didn't. I used -O3 for maximum optimization.

Does somebody know why it does not compile into a single function, or what I had to change to achieve that? You can find my code here: https://godbolt.org/z/qT9srfPT1 .

I know that it does not really matter, but I am curious.

The most important security benefit of software memory safety is easy to state: for C and C++ software, attackers can exploit most bugs and vulnerabilities to gain full, unfettered control of software behavior, whereas this is not true for most bugs in memory-safe software—just a few

This is a status update on improvements currently in progress for hardening and securing our C++ software.

Bjarne Stroustrup, creator of C++, has issued a call for the C++ community to defend the programming language, which has been shunned by cybersecurity agencies and technical experts in recent years for its memory safety shortcomings.

On Saturday, the ISO C++ committee completed the second-last design meeting of C++26, held in Hagenberg, Austria. There is just one meeting left before the C++26 feature set is finalized in June 2025 and draft C++26 is sent out for its international comment ballot (aka “Committee Draft” or “CD”), and C++26 is on track to be technically finalized two more meetings after that in early 2026.

It is now 45+ years since C++ was first conceived. As planned, it evolved to meet challenges, but many developers use C++ as if it was still the previous millennium. This is suboptimal from the perspective of ease of expressing ideas, performance, reliability, and maintainability. Here, I present the key concepts on which performant, type safe, and flexible C++ software can be built: resource management, life-time management, error-handling, modularity, and generic programming. At the end, I present ways to ensure that code is contemporary, rather than relying on outdated, unsafe, and hard-to-maintain techniques: guidelines and profiles.

I've tried a few tools like cloc to count the lines of code within my cpp project.

However, they are pretty surface level and just count the lines.

Is there anything that is able to show how many lines are for classe, imports, simple aliases, typedefs, and more detailed info like that.

My codebase is using C++ 20 modules and a lot of it is just imports and namespace aliases, so just counting the lines is pretty inaccurate. A lot of the files are simply just 10-20 lines at the header for imports, etc, and then just a small child class with constructors.

Which is to say that it's >50% "filler" in a lot of files.

If anyone knows any tools for this, ideally FOSS, please let me know. Thanks!

With P2900, we propose to add contract assertions to the C++ language. This proposal is in the final stages of wording review before being included in the draft Standard for C++26.

Full-text search engine for the C++ Working Draft (and older versions from Tim Song's repository)

(Only half joking with the poll options, too.)

On Saturday, the ISO C++ committee completed the third-last design meeting of C++26, held in Wrocław, Poland. There are just two meetings left before the C++26 feature freeze in June 2025, and C++26 is on track to be completed two more meetings after that in early 2026. Implementations are closely tracking draft C++26; GCC and Clang already support about two-thirds of C++26 features right now.