Software⏱️ 2 min read📅 2026-05-31

How to Fix: Command failed due to signal: Segmentation fault: 11

Learn how to fix: Command failed due to signal: Segmentation fault: 11.

Quick Answer: Try checking your system settings or restarting.

The 'Command failed due to signal: Segmentation fault: 11' error is a common issue encountered when compiling Swift apps in Xcode. This error occurs when the compiler encounters an invalid memory address, often caused by a faulty pointer or a mismatch between the data types used in the code.

⚠️ Common Causes

  • Using an invalid or uninitialized pointer.
  • Mismatch between data types used in the code.
  • A faulty or corrupted library or framework.

🚀 How to Resolve This Issue

Method 1: Debugging with Xcode's Debugger

  1. Step 1: Set a breakpoint in the code where you suspect the error is occurring.
  2. Step 2: Run the app under the debugger and observe the stack trace to identify the source of the error.

Method 2: Verifying Library Versions

  1. Step 1: Check the versions of all libraries and frameworks used in your project.
  2. Step 2: Update any outdated or corrupted libraries to their latest versions.

✨ Wrapping Up

By following these steps and debugging your code, you should be able to resolve the 'Command failed due to signal: Segmentation fault: 11' error and successfully compile your Swift app.

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