Location Info error for "missing function in trait implementation"

[MahadMuhammad]

Location Info error for "missing function in trait implementation"

• Solving this issue helps this PR https://github.com/Rust-GCC/gccrs/pull/2377 to emit error code similiar to rustc.

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I tried this code from E0046:

• You can view the same on compiler-explorer
• Also, these test cases has the same location info error.
  • rust/compile/traits4.rs
  • rust/compile/traits5.rs

// https://doc.rust-lang.org/error_codes/E0046.html
trait Foo {
    fn foo();
}

struct Bar;

impl Foo for Bar {}
// error: not all trait items implemented, missing: `foo`

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This happened:

• Location info was not clear.

➜  gccrs-build gcc/crab1 -frust-incomplete-and-experimental-compiler-do-not-use ../mahad-testsuite/E0046.rs
../mahad-testsuite/E0046.rs:9:1: error: missing foo in implementation of trait ‘Foo’ [E0046]
    4 |     fn foo();
+     |     ~~
-     |     --------- `foo` from trait
......
    9 | impl Foo for Bar {}
+     | ^~~~
-     | ^^^^^^^^^^^^^^^^ missing `foo` in implementation

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I expected to see this happen:

• Location info similiar to rustc-1.49.
• This is the output of rust-1.49:

➜  gccrs-build rustc  ../mahad-testsuite/E0046.rs
error[E0046]: not all trait items implemented, missing: `foo`
 --> ../mahad-testsuite/E0046.rs:9:1
  |
4 |     fn foo();
  |     --------- `foo` from trait
...
9 | impl Foo for Bar {}
  | ^^^^^^^^^^^^^^^^ missing `foo` in implementation

error: aborting due to previous error

For more information about this error, try `rustc --explain E0046`.

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Meta

• What version of Rust GCC were you using, git sha 562a7824220746c3ce9c803d8fb87cb7cace6ff1.

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