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Wednesday, November 19, 2003 |
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Why Can't I Set a Breakpoint?
I see a question from time to time that goes like:
I tried setting a breakpoint in CodeWarrior, but the debugger never stops on the line. When I look at it during debugging, the breakpoint is light red, rather than the bold red used for most of my breakpoints. What's going on?
There are a few possiblities:
First, make sure the compiler is generating debug information for your source file. This is controlled by the debug column in your project window; a dot should be in the column with the bug at the top.
If this is set, then the likely reason you can't set a breakpoint is due to inlining or optimization of code. If you declare your function as inline or you have auto-inlining turned on in the C/C++ Language panel, you may not be able to set a breakpoint, as there no one code location that maps to your source code line.
Finally, you might not be able to set a breakpoint due to dead stripping by the linker. This is where code isn't included in the final program because it is never called.
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