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I have c++ program which I run by passing string with it.
g++ -o a main.cpp -lpthread
and execute it with ./a "Good nice"
But how I debug it with gdb? main.cpp calling functions from other files which are included in it.
gdb ./a "Good nice"
takes "--" as files and says no such file!
I want to debug line by line!
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Compile the C program with debugging option -g Compile your C program with -g option. This allows the compiler to collect the debugging information. Note: The above command creates a.out file which will be used for debugging as shown below. Step 2. Launch gdb Launch the C debugger (gdb) as shown below. Step 3. Set up a break point inside C program
You can pass arguments if the program needs some command-line arguments to be passed to it: $ (gdb) run arg1 arg2 Debugging with GDB lets you investigate the core file as well. The core file contains information about when a program crashed.
GNU or GDB debugger is an application for finding out how your C or C++ program runs or for analyzing the moment the program crashes. You can perform many useful tasks with GDB: run the program, stop the program under specific conditions, analyze the situation, make modifications, and test new changes.
Step 1. Compile the C program with debugging option -g Compile your C program with -g option. This allows the compiler to collect the debugging information. Note: The above command creates a.out file which will be used for debugging as shown below. Step 2.
Use the --args option of gdb:
gdb --args ./a "Good nice"
Also add the -g option to your compiler call, because otherwise gdb won't be able to connect your executable with your source code:
g++ -g -o a main.cpp -lpthread
Use gdb without argument
gdb ./a
Then in gdb, before running the program
set args "Good nice"
And you can see what arguments you set, use
show args
See here for detail.
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