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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: How does one print elements of a rust vector in the llvm debugger?

If I compile the following cargo_test/src/main.rs:

fn main() {
   let v : Vec<u32> = vec![1, 2, 3];
   println!( "{:?}", v);
}

And then run the following commands in the cargo_test directory

lldb target/debug/cargo_test
b main.rs:4
run
p v

I get the output

(lldb) print v
(alloc::vec::Vec<unsigned int, alloc::alloc::Global>) {
  buf = {
    inner = {
      ptr = {
        pointer = (pointer = "\U00000001")
        _marker = {}
      }
      cap = (__0 = 3)
      alloc = {}
    }
    _marker = {}
  }
  len = 3
}

If I try to print the first element of v I get

(lldb) p v[0]
          ˄
          ╰─ error: type 'alloc::vec::Vec<unsigned int, alloc::alloc::Global>' does not provide a subscript operator
(lldb) 

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