Скачать или смотреть Resolving Stack Smashing Detected Errors in C+ +

Discover how to troubleshoot and resolve `stack smashing` errors in C+ + with our easy-to-follow guide. Learn about improper array indexing and how to fix it.
---
This video is based on the question https://stackoverflow.com/q/62226376/ asked by the user 'DS__ggg' ( https://stackoverflow.com/u/12811936/ ) and on the answer https://stackoverflow.com/a/62226423/ provided by the user 'Jeremy Friesner' ( https://stackoverflow.com/u/131930/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Stack Smashing Detected C+ + after I added new variables in my code along with some operations

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Introduction: Understanding the Problem

While coding in C+ + , many developers encounter a frustrating error known as stack smashing detected. This error usually arises when you try to write data outside the bounds of an array. But what exactly does this mean, and how can you fix it?

In this post, we will explore a common scenario that leads to such an error, as described by a developer facing issues after adding new variables to their code.

The Situation

Imagine you are working on a computational program, and everything is functioning nicely until you introduce a few lines of code. However, once you do this, the application unexpectedly terminates, and you are left confused about how to proceed. Here’s a look at the code snippet that caused the issue:

[[See Video to Reveal this Text or Code Snippet]]

The Root Cause: Out-of-Bounds Access

When examining the provided code, it’s essential to understand how arrays are structured in C+ + . You declared a 2D array flx with the size of [3][4], which means that it can hold 3 arrays (rows) of 4 float elements each. Here's the crucial point: The valid indices for the first dimension (i.e., the row indices) are 0, 1, and 2.

However, your for loop for a0 runs from 0 to 3:

[[See Video to Reveal this Text or Code Snippet]]

This means that when a0 reaches 3, you're attempting to access the fourth row of flx, which doesn't exist, leading to stack smashing.

How to Fix the Issue

Step-by-Step Solution

To resolve this issue, follow these simple steps:

Adjust the Loop Condition: Modify the upper limit of the outer loop to ensure it doesn’t exceed the valid indices of the flx array.

Change:

[[See Video to Reveal this Text or Code Snippet]]

To:

[[See Video to Reveal this Text or Code Snippet]]

Understand Array Bounds: Always be cautious with your loops. Ensure that your loop indices stay within the declared size of the arrays being accessed.

Revised Code Example

Here’s how your code should appear after the corrections:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By carefully managing your array indices, you can prevent common errors like stack smashing in C+ + . Always double-check the size of your arrays versus the loop conditions to avoid accessing invalid memory locations.

Following this guide will help you quickly resolve similar issues in your C+ + applications, allowing you to focus on building your projects smoothly. Happy coding!