Testing and Debugging

How to record and replay Linux terminal commands ?

If you want to capture something like commands when you are installing some software, compiling some opensource … Read more

Using electric fence for debugging memory leaks in Linux

Electric Fence helps you detect two common programming bugs: software that overruns the boundaries of a malloc() memory … Read more

How to use Valgrind to find memory leaks ?

Valgrind is an instrumentation framework for building dynamic analysis tools. There are Valgrind tools that can automatically … Read more

How to measure Network Throughput using iperf ?

iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports … Read more

How to install perf in Ubuntu Linux ?

Perf is a profiler tool for Linux 2.6+ based systems that abstracts away CPU hardware differences in … Read more

Understanding execution and debugging of C program using ltrace

As we seen in previous post “Understanding Very Minimal C Program and its execution in Ubuntu Linux” … Read more

Debugging using C macros __FILE__ and __func__ and __LINE__

Following program shows a sample example of how we can use C macros __FILE__ , __func__ and … Read more

How to resolve: error: initializer element is not constant

Sometimes during complex programing, there are chances we make some mistakes during hurry to write and complete … Read more

Setting different breakpoints in GDB while debugging

This post, is in continuation with “Using GDB to debug functions defined in another file in C” … Read more

Solved: compilation error for ARM toolchain “undefined reference to `_exit'”

Our ARM toolchain was extracted at “/home/devlab/Desktop/helloworld/assembly/gcc-arm-none-eabi-10-2020-q4-major/” hence lets first try to add this toolchain to terminal … Read more