derived traits do not have a location

[P-E-P]

Summary

In attributes, the traits to derive do not have a correct locus

#[derive(MyTrait)]
//         ^ here
// [...]

this means the error emitted on those items won't have a correct line/column reporting

Reproducer

I tried this code:

#![feature(no_core)]
#![no_core]

#[derive(Toto)]
struct Test {
}

Does the code make use of any (1.49) nightly feature ?

• Nightly

Godbolt link

https://godbolt.org/z/91ojhcz5f

Actual behavior

The current behavior is: no line number

Expected behavior

I expected to see a line/column prefix on the error message

GCC Version

1c6d3bf

[Pasta-coder]

i will come up with a pr .

thankyou

edit - pr added .