Currently viewing the category: "Bug Rectified"

HtmlUnit Memory Leak — A Workaround

By On September 24, 2012 · 4 Comments

HtmlUnit is a programmable browser without GUI. It’s written in Java and exposes APIs that allow us to open a window, load a web page, execute Javascript, fill in forms, click buttons and clicks etc. HtmlUnit is typically used for website testing or crawling information from web sites.

Recently I worked on a task [...]

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A Bug Occurred at malloc

By On February 21, 2012 · Leave a Comment

0. Context

I’m developing a program that allocates memory dynamically in a loop. For every iteration of the loop, the code allocates memory using malloc and then operates on the allocated memory. The program crashes at second iteration.

1. Locate the Bug

I added a few printf statements, and found that the program crashes [...]

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Bug Caused by pthread_create Input Parameters Passing

By On January 9, 2012 · Leave a Comment

0. The Context

I was working on a multi-threaded application using pthread library on Linux. One part of the application uses a thread pool with 100 threads. Each thread is supposed to finish its job and exit. The execution noramlly takes less than several seconds (we’ll call it short-living thread).

1. Locate the Bug

[...]

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A Bug Caused by Overlooking Operators Precedence in C

By On December 4, 2011 · Leave a Comment

Side Note: I’ve been thinking of writing blogs for bugs that have caused me hours to locate and fix for quite some time.

Sometimes I found myself making silly mistakes, sometimes I made same mistakes multiple times. Just like every other programmer, I spent lots of time locating bugs and fixing them. It’s worthwhile [...]

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