How to load program reading stdin and taking parameters in gdb?

Question

I have a program that takes input from stdin and also takes some parameters from command line. It looks like this:

cat input.txt > mypr         


        

Answer 1

This is eleven year later, and this question has an answer already, but for someone just like me in the future, I just wanted to add some thing.

After you run gdb your_program, if you just type run < file_containing_input, the program will just run till the end, and you might not catch the problem, so before you do run < file_containing_input do a break. Something like this

$ gdb your_program
gdb> break main
gdb> run < file_containing_input