How do you pass arguments into GDB argv[1] argv[2]?

Question

I need some clarifications on how GDB works in the IDE environment on cloud9

Is there two things different types of debuggers that the IDE environment?

• Debugger, through debug command input which looks does step by step compilation / checks inputs? (for source file)

• GDB, which checks the executable program?

Also, how do you pass arguments into GDB? I can't seem to figure this out.

I'm looking at pset4 and want to run GDB on the executable "copy" and pass in an input and an output file name

how would i do that in the terminal

EDIT

also my debugger is always broken as well

Answer 1

To run GDB with arguments in the terminal, use the --args parameter.

gdb --args name arg1 arg2 arg3

debug50 (the graphical debugger) is just GDB with a GUI. GDB was originally designed to be run through the terminal, and still is. It is much more flexible than any graphical debugger.

• Here's a complete reference guide for GDB: https://sourceware.org/gdb/current/onlinedocs/gdb/
• And here's a cheat sheet I found: https://cs.brown.edu/courses/cs033/docs/guides/gdb.pdf

However, here's some basics:

• Step-by-step debugging: next (or n)

• Setting a break point is done with break (or b) [function or line number], for example:

  break main or break 20 where '20' is the line to break.

• Run the program with run (or r).

• Use continue or c to skip to the next break point.

• To print a variable inside GDB (not using printf()) type print varname.

Alternatively, now that you know a few commands, you can run your program with some arguments with [r]un arg1 arg2 arg3.

As for your issues with debug50, I'm sorry to say that debug50's predecessor was broken and it looks like debug50 is now also broken. I never managed to fix it at least.