Coding⏱️ 2 min read📅 2026-05-31

How to Fix: throw new std::exception vs throw std::exception

Throwing exceptions in C++: use std::exception directly.

Quick Answer: Use `throw std::exception(

The use of `throw new std::exception` versus `throw std::exception` has sparked debate among developers, with some arguing that the former is unnecessary and incorrect. In this article, we will delve into the details of both approaches and explore their differences.

💡 Why You Are Getting This Error

  • The `throw new std::exception` syntax is a C++ construct that creates a new exception object and throws it. On the other hand, `throw std::exception` directly throws an existing exception object.

✅ Best Solutions to Fix It

Method 1: Avoid Using `new` with Exceptions

  1. Step 1: Use the `std::exception` constructor directly without creating a new object.

Method 2: Using Smart Pointers

  1. Step 1: Use a smart pointer, such as `std::unique_ptr` or `std::shared_ptr`, to manage the exception object.

✨ Wrapping Up

In conclusion, while both approaches may seem similar at first glance, using `throw new std::exception` can lead to unnecessary memory allocation and object creation. Instead, opt for the more efficient and C++- idiomatic approach of using `throw std::exception` or managing exceptions with smart pointers.

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