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Debugging

Xcode uses GDB for debugging, so you’ll want to review the Debugging chapter in Xcode User Guide. Xcode provides a powerful user interface to GDB that lets you step through your code, set breakpoints and view variables, stack frames, and threads.

Debugging with GDB—an Open Source document that explains how to use GDB—is another useful resource that you’ll want to look at. It provides a lot of valuable information, including how to get a list of breakpoints for debugging.

If you are moving code to GCC 4.0, you can find remedies for most linking issues and compiler warnings by consulting GCC Porting Guide. You can find additional information on the GCC options you can use to request or suppress warnings in Section 3.8 of the GNU C/C++/Objective-C 4.0.1 Compiler User Guide.

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