Undefined Behavior in C and C++

bad_alloc in C++

Last Updated : 27 Feb, 2018

Prerequisite : Exceptions in C++

Standard C++ contains several built-in exception classes. The most commonly used is bad_alloc, which is thrown if an error occurs when attempting to allocate memory with new.

This class is derived from exception.

To make use of bad_alloc, one should set up the appropriate try and catch blocks. Here’s a short example, that shows how it’s used :

C++

// CPP code for bad_alloc 
#include <iostream> 
#include <new> 
  
// Driver code 
int main () { 
  try
  { 
     int* gfg_array = new int[100000000]; 
  } 
  catch (std::bad_alloc & ba) 
  { 
     std::cerr << "bad_alloc caught: " << ba.what(); 
  } 
  return 0; 
} 

RunTime error :

bad_alloc caught: std::bad_alloc

Undefined Behavior in C and C++

bansal_rtk_

Improve

Article Tags :

Practice Tags :

CPP

Similar Reads

get_allocator() in C++

In STL, containers can change size dynamically. Allocator is an object that is responsible for dynamic memory allocation/deallocation. get_allocator() is used to allocate memory chunks of memory. It returns a copy of the allocator object associated with the container. It is defined in vector, map, l

map get_allocator in C++ STL

map::get_allocator() is a built in function in C++ STL which is used to get allocator of container map. Syntax: Allocator_type get_allocator() Parameters: This function does not accept any parameter. Return value: Returns an allocator associated with map. Below programs explains clearly the map::get

set get_allocator() in C++ STL

The set::get_allocator() in C++ STL is an in-built function which returns the copy of the allocator object associated with the set. Syntax: mulset.get_allocator(); Parameters: This function does not accept any parameters. Return Value: This function returns the allocator associated with the set. Tim

list get_allocator in C++ STL

list::get_allocator() is an inbuilt in function in C++ STL which is used to get allocator of container list. Syntax: Allocator_type get_allocator() Parameters: This function does not except any parameter. Return value: Returns an allocator associated with list. Below programs explains clearly the li

deque get_allocator in C++ STL

deque::get_allocator() is a built in function in C++ STL which is used to get allocator of container deque. Syntax: Allocator_type get_allocator() Parameters: This function does not accept any parameter. Return value: Returns an allocator associated with deque. Below programs illustrate the working

auto_ptr in C++

In C++, a memory leak may occur while de-allocating a pointer. So to ensure that the code is safe from memory leaks and exceptions, a special category of pointers was introduced in C++ which is known as Smart Pointers. In this article, we will discuss the auto pointer(auto_ptr) which is one of the s

Stack-buffer based STL allocator

It is absolutely possible to develop a stack allocator that completely complies with C++11 and C++14. However, you must take into account some of the implications of stack allocation's implementation, semantics, and interactions with common containers. Here is a fully compliant stack allocator for C

Min Heap in C++

A min-heap is a complete binary tree in which the value of each node is less than the value of its left child and right child. This property is true for every node in the tree. In this article, we will learn how we can implement the min heap data structure in C++. Implementation of Min Heap in C++A

STD::array in C++

The array is a collection of homogeneous objects and this array container is defined for constant size arrays or (static size). This container wraps around fixed-size arrays and the information of its size are not lost when declared to a pointer. In order to utilize arrays, we need to include the ar

std::allocator() in C++ with Examples

Allocators are objects responsible for encapsulating memory management. std::allocator is used when you want to separate allocation and do construction in two steps. It is also used when separate destruction and deallocation is done in two steps. All the STL containers in C++ have a type parameter A