Debugging Rust with gdb

Question

I\'m aware of the debugging Rust questions here on StackOverflow and I also used gdb before with Go. However, I\'m running into a problem where it seems gdb is unable t

Answer 1

Ok, I figured out what was wrong. I have to manually emit the main.o file. I thought the -g parameter would just cut it.

Now that I run

rustc -g main.rs --emit="obj,link"

I can run

gdb main

And everything works like a charme.

I created two aliases for my bash to make things simple:

alias rd='rustc -g --emit="obj,link"'

compile_and_run() {
     rustc -g --emit="obj,link" $1 && gdb ${1%.*}
}

alias rdr=compile_and_run

Now I can just call rdr main.rs and it will start debugging main.rs with gdb.

Answer 2

Same question, later Rust version (1.0.0-beta), totally different answer:

In GDB, when debugging a Rust executable, break main sets a breakpoint in some setup code that is part of the Rust standard library. This isn't what you want.

Instead type: break $YOUR_CRATE::main, substituting the name of your program for $YOUR_CRATE.