GDB

What is GDB?

• A gdb is a program(Executable) that is used to test and debug other programs(Our Executable).

Uses of gdb:

• Run the program Step by step

• Tracking values of variables

• Debugging while program is running

• Stop debugging when program encounter a breakpoint.

By using gdb we find below things,

• To find which statement or expression causes a error.

• To find the instant values(i.e x = 5) of variables at particular point during execution of program.

• To find result of program at particular point

• To fins execution sequence of statements in a program.

If we are debug the program with GDB means we need to build the executable with below command,

Ex, gcc -g sample.c -o output.out.

gcc '-g' option flag

gcc -g generates debug information to be used by GDB debugger.

Based on the below option executable size was increased.

Commands	Link
set variable<variable_name>=<value>	This is a link

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