Merge #2592

2592: Add std::ops::Index support for infering r=edwin0cheng a=edwin0cheng

see also #2534

Seem like this can't fix #2534 for this case:

```rust
fn foo3(bar: [usize; 2]) {
    let baz = bar[1];   // <--- baz is still unknown ?
    println!("{}", baz);
}
```

Co-authored-by: Edwin Cheng <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/crates/ra_hir_def/src/path.rs b/crates/ra_hir_def/src/path.rs
index 7302cf0f1..00325cd99 100644
--- a/crates/ra_hir_def/src/path.rs
+++ b/crates/ra_hir_def/src/path.rs
@@ -257,6 +257,7 @@ macro_rules! __known_path {
     (std::ops::Try) => {};
     (std::ops::Neg) => {};
     (std::ops::Not) => {};
+    (std::ops::Index) => {};
     ($path:path) => {
         compile_error!("Please register your known path in the path module")
     };