This guide explains how to set hardware watchpoints in GDB to monitor specific memory addresses, demonstrates the technique with a simple C++ program that modifies a variable via a thread, and shows how GDB reports the exact location and values of the change.
This guide explains why memory bugs are hard to locate in C/C++ programs, introduces GDB watchpoints as a way to monitor specific memory addresses, and walks through a complete example—including source code, compilation, breakpoint setting, watchpoint creation, and interpreting the hardware watchpoint output—to pinpoint the exact line that modifies a variable.
This article explains how to set hardware and software watchpoints in GDB to monitor specific memory addresses, demonstrates the technique with a multithreaded C++ example, and describes the underlying CPU debug registers that enable precise detection of reads and writes.
This article explains how to use GDB watchpoints to monitor specific memory locations in C/C++ programs, demonstrates setting hardware watchpoints, shows example code with a thread modifying a variable, and details the underlying CPU debug registers that enable real‑time detection of memory reads and writes.
