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Cannot open library by its absolute path if it's not canonicalized
I am facing strange behavior: when I am passing the absolute path to Lib::new
method, it returns an error saying that it cannot find the file. However, calling canonicalize
on the passed Path
removes the problem. I wouldn't call it weird if the original path wouldn't be absolute, but it is
I've used this code to check if my suspicions are correct. I've used sharedlib
and libloading
crates as alternatives. The second test passes, and the first one fails on the third assert
use sharedlib::Lib;
use libloading::Library;
use std::path::Path;
static LIB_PATH: &str = "/tmp/libgetset.so";
#[test]
fn test_not_canonical_path() {
let path = Path::new(LIB_PATH);
println!("{:?}", &path);
assert!(path.exists());
let library = unsafe { Library::new(&path) };
assert!(library.is_ok());
let library = unsafe { Lib::new(&path) };
assert!(library.is_ok());
}
#[test]
fn test_canonical_path() {
let path = Path::new(LIB_PATH).canonicalize().unwrap();
println!("{:?}", &path);
assert!(path.exists());
let library = unsafe { Library::new(&path) };
assert!(library.is_ok());
let library = unsafe { Lib::new(&path) };
assert!(library.is_ok());
}
fn main() {
}
I am using Linux machine with Ubuntu 16.04
The dynamic library I am using is compiled getset
procedural macro, but I think it doesn't really matter and you can replace it with what you have at hand