tags:

views:

27

answers:

1
Q: 

Bug only appears when running C code inside NetBeans

Running a piece of C code from inside Netbeans 6.8 causes a Segmentation Fault. But the problem doesn't appear when running in debugging mode or from shell. Tried both in external terminal and output window of Netbeans.

The process is threaded, and uses an itimer that sends a signal, which I am masking with pthread_sigmask for threads that are irrelevant.

I saw some things about bugs hiding in debugging mode, but why could they also be hidden when running in shell?

A: 

When your program exhibits any undefined behaviour, any change in the operating environment can cause the application to behave differently. This different behaviour may or may not be a crash.

If the application is multithreaded, you may have some race conditions. Best bet is to take the core dump and investigate.

doron  2010-09-17 14:38:45
From dmesg i got that the segfaults happened in the small profiler tool that netbeans has. And indeed, after disabling this, the problem doesn't appear. Still I don't know if it could be a netbeans bug. Anyway thanks for the help.
andysfoug  2010-09-17 15:54:32

related questions

any good tool for makefile generation?
How do you pass a function as a parameter in C?
Where should a veteran C programmer start in order to master Java ?
Any good book on best practice and guidelines in developing a SDK in C?
How do you determine the size of a file in C?
Decoding printf statements in C (Printf Primer)
Shift operator in C
How to avoid redefining VERSION, PACKAGE, etc.
Alpha blending sprites in Nintendo DS Homebrew
When should I use type abstraction in embedded systems
How to implement continuations?
What are the barriers to understanding pointers and what can be done to overcome them?
Anyone have experience creating a shared library in MATLAB?
String.indexOf function in C
Passing multidimensional arrays as function arguments in C
C/C++ library for reading MIDI signals from a USB MIDI device
Choosing a static code analysis tool
How do you printf an unsigned long long int?
Good STL-like library for C.
Rockbox audio format
Why am I getting a malloc: double free error with realloc()?
Should I learn C?
GTK implementation of MessageBox
Is gettimeofday() guaranteed to be of microsecond resolution?
How to use the C socket API in C++ on z/OS