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"Cannot insert breakpoints"

Under some operating systems, breakpoints cannot be used in a program if any other process is running that program. In this situation, attempting to run or continue a program with a breakpoint causes GDB to stop the other process.

When this happens, you have three ways to proceed:

1. Remove or disable the breakpoints, then continue.

2. Suspend GDB, and copy the file containing your program to a new name. Resume GDB and use the exec-file command to specify that GDB should run your program under that name. Then start your program again.

3. Relink your program so that the text segment is nonsharable, using the linker option `-N'. The operating system limitation may not apply to nonsharable executables.

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