Xcode breakpoints shifted at runtime

I have been searching for an hour or so here and on Google and cant find the answer as to how correct breakpoints being shifted during run. I have reinstalled Xcode(3.2.2), insured load laz开发者_开发知识库ily is off, no optimization in target settings, and every other target setting that might cause the problem. I have also destroyed all of the user project files (except for the main .pro file) and nothing seems to correct this. Yes, I am running with breakpoints on. Yes, I have done clean builds.

When I set a breakpoint, in the debugger the break stops two or 3 (or more lines) down in the source code, single stepping continues to show the wrong line. Also, in the debugger window the dark blue breakpoint symbol is gone, it does appear in an editor window.

This is driving me batty.

I had a similar problem (weirdly shifted breakpoints) but my issue turned out to be that I had the wrong target set, so the code I was modifying and setting breakpoints on wasn't even being rebuilt! But the executable would still run, using the old code, leading to what appeared to be oddly shifted breakpoints.

Sometimes Xcode gets confused about line numbering when your source files have inconsistent line endings, e.g. because you've been using different editors and may have a mixture of different line endings in your source file. You can use a tool like BBEdit or its free sibling TextWrangler to fix this problem.

With-in "Build Settings" under the project target change the "Optimization Level" for "Debug" to "None".

I found that this fixed the issue for me.