constexpr is a Platform--Jonathan Müller
What do you think?
constexpr is a Platform
by Jonathan Müller
From the article:
Let me share a useful insight with you: constexpr is a platform...
Lay a strong foundation by writing secure C and C++ utilities
*nix systems assume you know what you're doing - even if you're doing something silly or dangerous. That's why you need to take extra precautions if you expect your code to be run as a privileged process.
Lay a strong foundation by writing secure C and C++ utilities
by G. Ann Campbell
From the article:
Libraries and system utilities form the foundations on which larger projects are built. So it's critical to make sure they, in particular, are secure. That's why we recently introduced five new rules for C++ and C to detect broken authentication and access control in *nix systems. The new rules fall into three categories: account validity, granting permissions, and changing directories.
SonarLint for Visual Studio adds secondary locations
The latest release of SonarLint for Visual Studio adds secondary locations to help you better understand the issues it raises in your C++ code. SonarLint is a free static analysis extension installable from the Visual Studio Marketplace.
Visualizing issues with secondary locations
By Duncan Pocklington
From the article:
All SonarLint issues specify a location in the code showing where the issue occurs. However, some of the more complex rules produce issues for which a single location is not enough to adequately explain why the issue has occurred. These more complex rules often identify additional locations in the code to help understand the problem. These additional locations are referred to as secondary locations.
2020-10 mailing available
The 2020-10 mailing of new standards papers is now available.
| WG21 Number | Title | Author | Document Date | Mailing Date | Previous Version | Subgroup |
|---|---|---|---|---|---|---|
| N4863 | Agenda for Fall Virtual WG21/PL22.16 Meeting | John Spicer | 2020-10-02 | 2020-10 | All of WG21 | |
| N4864 | WG21 virtual meeting: Autumn 2020 | Herb Sutter | 2020-09-21 | 2020-10 | All of WG21 | |
| N4865 | Response to Editorial Comments: ISO/IEC DIS 14882, Programming Language C++ | Barry Hedquist | 2020-10-19 | 2020-10 | All of WG21 | |
| N4866 | WG21 admin telecon meeting: Pre-Autumn 2020 | Herb Sutter | 2020-10-14 | 2020-10 | All of WG21 | |
| N4867 | Editors' Report -- Programming Languages -- C++ | Richard Smith | 2020-10-18 | 2020-10 | All of WG21 | |
| N4868 | Working Draft, Standard for Programming Language C++ | Richard Smith | 2020-10-18 | 2020-10 | All of WG21 | |
| P0847R5 | Deducing this | Barry Revzin | 2020-10-16 | 2020-10 | P0847R4 | EWG Evolution |
| P0849R4 | auto(x): decay-copy in the language | Zhihao Yuan | 2020-10-11 | 2020-10 | P0849R3 | EWG Evolution,LWG Library |
| P0870R4 | A proposal for a type trait to detect narrowing conversions | Giuseppe D'Angelo | 2020-09-23 | 2020-10 | P0870R3 | SG6 Numerics |
| P1048R1 | A proposal for a type trait to detect scoped enumerations | Juan Alday | 2020-10-16 | 2020-10 | P1048R0 | LWG Library |
| P1206R2 | ranges::to: A function to convert any range to a container | Corentin Jabot | 2020-10-12 | 2020-10 | P1206R1 | LEWG Library Evolution |
| P1401R4 | Narrowing contextual conversions to bool | Andrzej Krzemieński | 2020-10-08 | 2020-10 | P1401R3 | EWG Evolution |
| P1525R1 | One-Way execute is a Poor Basis Operation | Eric Niebler | 2020-10-14 | 2020-10 | P1525R0 | LEWG Library Evolution |
| P1759R3 | Native handles and file streams | Elias Kosunen | 2020-10-12 | 2020-10 | P1759R2 | LEWG Library Evolution |
| P1938R2 | if consteval | Barry Revzin | 2020-10-13 | 2020-10 | P1938R1 | EWG Evolution |
| P2029R4 | Proposed resolution for core issues 411, 1656, and 2333; escapes in character and string literals | Tom Honermann | 2020-10-19 | 2020-10 | P2029R3 | CWG Core |
| P2066R4 | Suggested draft TS for C++ Extensions for Minimal Transactional Memory | Jens Maurer | 2020-10-14 | 2020-10 | P2066R3 | SG1 Concurrency and Parallelism,EWG Evolution,LEWG Library Evolution |
| P2093R2 | Formatted output | Victor Zverovich | 2020-10-15 | 2020-10 | P2093R1 | LEWG Library Evolution |
| P2148R0 | Library Evolution Design Guidelines | CJ Johnson | 2020-09-23 | 2020-10 | LEWGI SG18: LEWG Incubator,LEWG Library Evolution | |
| P2171R1 | Rebasing the Networking TS on C++20 (revision 1) | Jonathan Wakely | 2020-10-15 | 2020-10 | P2171R0 | LWG Library |
| P2171R2 | Rebasing the Networking TS on C++20 (revision 2) | Jonathan Wakely | 2020-10-18 | 2020-10 | P2171R1 | LWG Library |
| P2187R5 | std::swap_if, std::predictable | Nathan Myers | 2020-10-19 | 2020-10 | P2187R4 | LEWG Library Evolution |
| P2192R3 | std::valstat - Returns Handling | Dusan B. Jovanovic | 2020-10-13 | 2020-10 | P2192R2 | LEWGI SG18: LEWG Incubator |
| P2198R1 | Freestanding Feature-Test Macros and Implementation-Defined Extensions | Ben Craig | 2020-10-04 | 2020-10 | P2198R0 | SG10 Feature Test |
| P2214R0 | A Plan for C++23 Ranges | Barry Revzin | 2020-10-14 | 2020-10 | LEWG Library Evolution | |
| P2223R1 | Trimming whitespaces before line splicing | Corentin Jabot | 2020-10-17 | 2020-10 | P2223R0 | EWG Evolution,CWG Core |
| P2226R0 | A function template to move from an object and reset it to its default constructed state | Giuseppe D'Angelo | 2020-10-18 | 2020-10 | SG1 Concurrency and Parallelism,LEWGI SG18: LEWG Incubator,SG20 Education | |
| P2227R0 | Update normative reference to POSIX | Jonathan Wakely | 2020-10-02 | 2020-10 | LWG Library | |
| P2228R0 | Slide Deck for P1949 EWG Presentation 20200924 | Steve Downey | 2020-10-15 | 2020-10 | EWG Evolution | |
| P2231R0 | Add further constexpr support for optional/variant | Barry Revzin | 2020-10-13 | 2020-10 | LEWG Library Evolution | |
| P2233R0 | 2020 Fall Library Evolution Polls | Bryce Adelstein Lelbach | 2020-10-15 | 2020-10 | LEWG Library Evolution | |
| P2234R0 | Consider a UB and IF-NDR Audit | Scott Schurr | 2020-10-14 | 2020-10 | SG12 Undefined and Unspecified Behavior,EWGI SG17: EWG Incubator | |
| P2235R0 | Disentangling schedulers and executors | Ville Voutilainen | 2020-10-15 | 2020-10 | SG1 Concurrency and Parallelism,LEWG Library Evolution | |
| P2236R0 | C++ Standard Library Issues to be moved in Virtual Plenary, Nov. 2020 | Jonathan Wakely | 2020-10-15 | 2020-10 | All of WG21 | |
| P2237R0 | Metaprogramming | Andrew Sutton | 2020-10-15 | 2020-10 | SG7 Reflection |
Ongoing online jobfair organized by Meeting C++
Letting you know that you can join the online job fair organized by Meeting C++ for another two hours via the link below
Join live in Remo
organized by Jens Weller
You can also share your CV now or after the event via cvupload.meetingcpp.com
The current Berlin status for Meeting C++ 2020
An update on how Meeting C++ 2020 will be online but also feature a small onsite event in Berlin:
The current Berlin status for Meeting C++ 2020
by Jens Weller
From the article:
With this post I'd like to give you the details for the onsite event in Berlin in November 2020.
First, let me say that unless there is a local lockdown, this is going to happen. I've been in Berlin at the beginning of the week, and had a meeting with the hotel. So this is the up to date information. And I assume for some of you its something to look forward to, to enjoy a real conference with actual people in 2020. The tickets for Berlin are available, and these include access to the online event.
Part 2: Upsetting Opinions about Static Analyzers
By writing the article "Upsetting Opinions about Static Analyzers" we were supposed to get it off our chest and peacefully let it all go. However, the article unexpectedly triggered robust feedback. Unfortunately, the discussion went in the wrong direction, and now we will make a second attempt to explain our view of this situation.
Part 2: Upsetting Opinions about Static Analyzers
by Andrey karpov
From the article:
And started coming up with cases when it might be justified, which means that the PVS-Studio analyzer warning was a false-positive. Some speculations about the change in memory between two checks came into play which occurs due to:
- running parallel threads;
- signal/interrupt handlers;
- the variable X is a reference to the element A[0];
- hardware, such as performing DMA operations;
- and so on.
After heated debate on the analyzer's inability to comprehend all cases, they left to cut down forest with axes. In other words, they found an excuse why they could still avoid using a static code analyzer in their work.
A brief introduction to C++ structured binding--Raymond Chen
Did you know about it?
A brief introduction to C++ structured binding
by Raymond Chen
From the article:
C++17 introduced a feature known as structured binding. It allows a single source object to be taken apart...
Clang 11.0.0 Release Notes — Clang 11 documentation
The new version is here.
Clang 11.0.0 Release Notes — Clang 11 documentation
From the article:
This document contains the release notes for the Clang C/C++/Objective-C frontend, part of the LLVM Compiler Infrastructure, release 11.0.0. Here we describe the status of Clang in some detail, including major improvements from the previous release and new feature work. For the general LLVM release notes, see the LLVM documentation. All LLVM releases may be downloaded from the LLVM releases web site.
C++20: Extend std::format for User-Defined Types--Rainer Grimm
The new formatting arrives.
C++20: Extend std::format for User-Defined Types
by Rainer Grimm
From the article:
Peter Gottschling presented in his last post "std::format in C++20" the basics to the new formatting library in C++20. In today's post Peter writes about the formatting of user-defined types...