Compilers

Frame pointers: Untangling the unwinding

Guinevere Larsen

July 31, 2023

Explore how frame pointers can be used to unwind Linux kernel stack traces and examine different ways to obtain a backtrace, along with their pros and cons.

A developer’s guide to secure coding with FORTIFY_SOURCE

Sandipan Roy

July 4, 2023

Learn how the FORTIFY_SOURCE feature in the GNU C library improves C code security by detecting and preventing buffer overflow, and more.

Discover the benefits of the Fedora 38 new feature for ppc64le. Now Clang uses the IEEE 128-bit long double by default.

Explore new features in Red Hat Enterprise Linux 9.2, which provides a flexible and stable foundation to support hybrid cloud innovations.

The GNU Compiler Collection 13 release implemented a number of interesting features in its C front-end. This article summarizes the most interesting ones.

Learn how to use GDB to debug C++ lambda expressions and explore some of the challenges associated with debugging function objects.

Learn about an upcoming change in GCC 13's libstdc++ that reduces executable size and improves startup times for C++ programs that use the <iostream> header.

Discover how to improve application and library security at the source with _FORTIFY_SOURCE macro defined to 3 and how it impacts performance.

The GCC compiler is expanding range tracking in optimizations.

Interested in contributing to the open source LLVM project? This article walks you through the process.

Learn about 8 optimization techniques for a faster interpreter in Ruby which I developed using a dynamically specialized internal representation (IR).

Learn about the new features from OpenMP 5.1 and OpenMP 5.2 which are implemented in GCC 12.

Could your perfectly running program blow up someday? Learn different types of behavior in the standard and what helps make a correct C or C++ program.

Discover how flexible array members offer convenience and improve performance, and how compiler complexities are mitigated.

Discover the gains and costs of GCC’s enhanced runtime buffer overflow protection. Level 3 _FORTIFY_SOURCE preprocessor macro may detect more buffer overflows, but there’s a cost.

Optimizations in the HotSpot virtual machine that used to work only for int variables now work also for long.

Use a Python API for GDB Text User Interface (TUI) to retrieve content from GDB and display the content in a scrolling window.

The GDB Text User Interface (TUI) has a Python API to retrieve content of your choice dynamically from GDB and display it in a custom window.

How to debug stack frames and recursion in GDB

Guinevere Larsen

June 7, 2022

Learn the commands that let you move up and down the stack when debugging C and C++ programs.

Smash-stacking attacks are common, but the GCC and Clang compilers have a number of flags that can help defend against them. Read on for more info.

Version 12 of GCC implements much of the recent C++ standard, allows a number of previously prohibited constructs, and fixes some problematic behaviors.

New features and a substantial reduction in false positives bring GCC's static analysis closer to being production-ready for C code.

Discover how Red Hat protects GCC 12 code from Trojan Source attacks. Learn how we defend our customers against this recent software vulnerability.

Find out what debugging information is, where it's stored, and how to inspect it. This article is the second of a three-part series about using GNU Debugger.

Find out what's new in Libabigail 2.0, including updates to the symbol table reader component, ABIXML format, and moving to the Apache 2 license.