How to use gdb in windows

 Below is a program that shows undefined behavior when compiled using C99.

Note: If an object that has automatic storage duration is not initialized explicitly, its value is indeterminate, where the indeterminate value is either an unspecified value or a trap representation. 

Now compile the code.

(here test.c). g flag means you can see the proper names of variables and functions in your stack frames, get line numbers and see the source as you step around in the executable. -std=C99 flag implies use standard C99 to compile the code.

-o flag writes the build output to an output file. 

gcc -std=c99 -g -o test test.C

Run GDB with the generated executable

Type the following command to start GDB with the compiled executable.

gdb ./test

Useful GDB commands:

Here are a few useful commands to get started with GDB.

Command	Description
run or r	Executes the program from start to end.
break or b	Sets a breakpoint on a particular line.
disable	Disables a brea how to gdb in linux use gdb from command line