Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to automatically generate a stacktrace when a gcc C++ program crashes?
For Linux and we can use gcc to compile C/C++ codes. This compiler uses glibc library. We can use the backtrace() function to trace the error. This function is present inside the execinfo.h header file. In this example, we are going to display Segmentation fault error using the stack trace feature.
Example
#include <iostream>
#include <execinfo.h>
#include <signal.h>
#include <cstdlib>
#include <unistd.h>
using namespace std;
void error_handler(int sig) {
void *array[10];
size_t size;
size = backtrace(array, 10); //get the void pointers for all of the entries
cout << "Error: signal "<< sig <<":\n"; //display error signal
backtrace_symbols_fd(array, size, STDERR_FILENO);
exit(1);
}
void invalid_index() {
int *ptr = (int*) - 1;
cout << *ptr << endl; // segmentation error
}
void func1() {
invalid_index();
}
void func2() {
func1();
}
int main(int argc, char **argv) {
signal(SIGSEGV, error_handler); // use handler to print the errors
func2(); // this will call all other function to generate error
}Output
Error: signal 11: ./a.out(+0x825)[0x5579a31d7825] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f7689009f20] ./a.out(+0x880)[0x5579a31d7880] ./a.out(+0x8a1)[0x5579a31d78a1] ./a.out(+0x8ad)[0x5579a31d78ad] ./a.out(+0x8d5)[0x5579a31d78d5] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f7688fecb97] ./a.out(+0x71a)[0x5579a31d771a]
Updated on: 30-Jul-2019
2K+ Views
Advertisements