examples

Debugger for diagnostics - example

To use a debugger for diagnostics, you can use Rust's built-in debugger, which called GDB (GNU Debugger).

Activate debug symbols. GDB requires debug symbols to provide human-readable information about the code, such as function and variable names, file names, and line numbers. To enable debug symbols in a release, you can add the following lines to their Cargo.toml file:

[profile.release]
debug = true

Build the program with debugging information. You can then build their Rust code with the debug option.

cargo build --bin my_program --release

Start GDB by typing gdb my_program in the terminal (where my_program is the name of the executable file).

Load the executable by using the command file my_program to load your program into GDB.

Set breakpoints. You can place breakpoints in your Rust code using the break command. For instance, to stop the program when reaching line 10 of the file main.rs, you can type break main.rs:10.

Run the program. You can execute the program by typing run. The execution will pause at the first breakpoint, if there is one.

Inspect variables. You can use the print command to check the value of a variable at a specific point in the code. For example, print x.

Use backtrace. You can use the bt command to print a backtrace of the stack, which shows the sequence of function calls that led to the current state of the program.

Continue execution of the program by using the command continue.