why this signal handler is called infinitely

Posted by lz_prgmr on Stack Overflow See other posts from Stack Overflow or by lz_prgmr
Published on 2010-12-26T07:38:32Z Indexed on 2010/12/26 7:54 UTC
Read the original article Hit count: 206

Filed under:

mac

|

signal

I am using Mac OS 10.6.5, g++ 4.2.1. And meet problem with following code:

#include <iostream>
#include <sys/signal.h>
using namespace std;

void segfault_handler(int signum)
{
    cout << "segfault caught!!!\n";
}

int main()
{
    signal(SIGSEGV, segfault_handler);

    int* p = 0;
    *p = 100;

    return 1;
}

It seems the segfault_handler is called infinitely and keep on print:

segfault caught!!!
segfault caught!!!
segfault caught!!!
...

I am new to Mac development, do you have any idea on what happened?

© Stack Overflow or respective owner

Related posts about mac

Need a non-Mac keyboard alternative for Mac users

as seen on Super User - Search for 'Super User'
I'm a Macbook Pro user. I like Apple products in general, but I hate their keyboards. I work on my computer/laptop 10+ hours a day, so I would like to have a keyboard that is Mac-compatible and ergonomic. I found this one on Amazon. It is specifically made for Mac. However, I would like to get some… >>> More
Including an embedded framework using a cross-project-reference: Header no such file or directory

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to create a Cocoa framework by using a cross-project reference in Xcode. I have 2 projects: one for the framework; one for the application that will use the framework. This framework is not intended to be stored within the system; it is an embedded framework that lives within the application… >>> More
C# development with Mono and MonoDevelop

as seen on Developer IT - Search for 'Developer IT'
In the past two years, I have been developing .NET from my MacBook by running Windows XP into VM Ware and more recently into Virtual Box from OS X. This way, I could install Visual Studio and be able to work seamlessly. But, this way of working has a major down side: it kills the battery of my laptop…… >>> More
12.04lts: no network internet

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Friends-- Cannot connect reliably to ethernet nor at all to Internet: Symptoms: About 2 weeks ago did an upgrade. Have not been able to connect to ethernet nor Internet. Today, for example, boot up this System76 laptop and there was no network connection. Did sudo mount -a and got some internal… >>> More
Why i disconnect every few seconds? using USB wireless adapter

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i know it's for ubuntu questions..but mint and ubuntu are very similiar and i had the same problem with linux ubuntu too..so i think this is the right place for my question anyway i don't have experience with drivers and other things,after installing Linux on my machine( i did dist-upgrade btw) everything… >>> More

Related posts about signal

Issues with signal handling [closed]

as seen on Programmers - Search for 'Programmers'
I am trying to actually study the signal handling behavior in multiprocess system. I have a system where there are three signal generating processes generating signals of type SIGUSR1 and SIGUSR1. I have two handler processes that handle a particular type of signal. I have another monitoring process… >>> More
Confusion related to sigwait in multiprocess system

as seen on Programmers - Search for 'Programmers'
I am having difficulty in understanding IPC in multiprocess system. I have this system where there are three child processes that send two types of signals to their process group. There are four types of signal handling processes responsible for a particular type of signal. There is this monitoring… >>> More
Help with implementing signal handlers via signal()

as seen on Stack Overflow - Search for 'Stack Overflow'
void main () { int c; signal (SIGINT, Handle); while (( c = getchar()) != '\n' ); return(); } void Handle(signum) { signal {SIGINT, Handle); printf ("beep \n"); } I thought it would print 'beep' until any key has been pressed but the method call is outside the loop? :S >>> More
Get signal names from numbers in Python

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there a way to map a signal number (e.g. signal.SIGINT) to its respective name (i.e. "SIGINT")? I'd like to be able to print the name of a signal in the log when I receive it, however I cannot find a map from signal numbers to names in Python, i.e. import signal def signal_handler(signum, frame): … >>> More
Help with force close occurrences in my app

as seen on Stack Overflow - Search for 'Stack Overflow'
This is the last issue with this app. Periodic force close situations. I think something should be on another thread but I'm not sure what. Anyway, I can always count on a freeze on first install. If I wait, eventually (maybe 10 seconds) the app comes around, maybe more. here is an excerpt from… >>> More