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  2. c - How to debug using gdb? - Stack Overflow

    stackoverflow.com/questions/2069367

    In short, the following commands are all you need to get started using gdb: break file:lineno - sets a breakpoint in the file at lineno. set args - sets the command line arguments. run - executes the debugged program with the given command line arguments. next (n) and step (s) - step program and step program until it.

  3. The first step is to compile your program with -g to include debugging information within the executable: g++ -g -o myprog.exe mycode.cpp. Then the program can be loaded into gdb: gdb myprog.exe. A few commands to get you started: break main will cause the debugger to break when main is called.

  4. This is why OpenOCD also starts a GDB server on TCP port 3333. A GDB client can connect to that port, and start debugging the microcontroller! The Gnu Debugger is a command line software. Many people prefer a visual interface. That is exactly what Eclipse does. Eclipse starts a GDB client that connects to OpenOCD - but that is all hidden to the ...

  5. How do I print the elements of a C++ vector in GDB?

    stackoverflow.com/questions/253099

    To print only the first N elements, do: print *(myVector._M_impl._M_start)@N. Explanation. This is probably heavily dependent on your compiler version, but for GCC 4.1.2, the pointer to the internal array is: myVector._M_impl._M_start. And the GDB command to print N elements of an array starting at pointer P is: print P@N.

  6. From within gdb press Ctrl x 2 and the screen will split into 3 parts. First part will show you the normal code in high level language. Second will show you the assembly equivalent and corresponding instruction Pointer. Third will present you the normal gdb prompt to enter commands. answered Jan 16, 2014 at 5:17.

  7. With this script in place, I can call gdb in batch mode - which will generate the following output in the terminal: $ gdb --batch --command=test.gdb --args ./test.exe 5. Breakpoint 1 at 0x804844d: file test.c, line 10. Breakpoint 2 at 0x8048485: file test.c, line 17. Breakpoint 3 at 0x8048473: file test.c, line 16.

  8. GCC -g vs -g3 GDB Flag: What is the Difference?

    stackoverflow.com/questions/10475040

    Some debuggers support macro expansion when you use -g3 ", while -g does not include this extra information. The broader answer is that gcc supports four levels of debug information, from -g0 (debug information disabled) through -g3 (maximum debug information). Specifying -g is equivalent to -g2. Curiously, the gcc docs say little about what ...

  9. 113. Yes. Use the attach command. Check out this link for more information. Typing help attach at a GDB console gives the following: (gdb) help attach. Attach to a process or file outside of GDB. This command attaches to another target, of the same type as your last " target " command (" info files " will show your target stack).

  10. Voltron is an extensible debugger UI for hackers. It allows you to attach utility views running in other terminals to your debugger (LLDB or GDB), displaying helpful information such as disassembly, stack contents, register values, etc, while still giving you the same debugger CLI you're used to.

  11. This means that you should prefer the syntax: set variable idx = 1 or set var idx = 1. Last but not least, you can just use your trusty old print command, since it evaluates an expression. The only difference being that he also prints the result of the expression. (gdb) p idx = 1. $1 = 1.