Auto merge of rust-lang#84401 - crlf0710:impl_main_by_path, r=petrochenkov

bors · bors · commit 5491c802c2f6 · 2021-04-30T06:59:37.000Z
Implement RFC 1260 with feature_name `imported_main`. This is the second extraction part of rust-lang#84062 plus additional adjustments. This (mostly) implements RFC 1260. However there's still one test case failure in the extern crate case. Maybe `LocalDefId` doesn't work here? I'm not sure. cc rust-lang#28937 r? `@petrochenkov`
diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
@@ -678,7 +678,7 @@ pub fn method_chain_args<'a>(expr: &'a Expr<'_>, methods: &[&str]) -> Option<Vec
 pub fn is_entrypoint_fn(cx: &LateContext<'_>, def_id: DefId) -> bool {
     cx.tcx
         .entry_fn(LOCAL_CRATE)
-        .map_or(false, |(entry_fn_def_id, _)| def_id == entry_fn_def_id.to_def_id())
+        .map_or(false, |(entry_fn_def_id, _)| def_id == entry_fn_def_id)
 }
 
 /// Returns `true` if the expression is in the program's `#[panic_handler]`.

Original file line number	Diff line number	Diff line change
`@@ -678,7 +678,7 @@ pub fn method_chain_args<'a>(expr: &'a Expr<'_>, methods: &[&str]) -> Option<Vec`
`678`	`678`	`pub fn is_entrypoint_fn(cx: &LateContext<'_>, def_id: DefId) -> bool {`
`679`	`679`	`cx.tcx`
`680`	`680`	`.entry_fn(LOCAL_CRATE)`
`681`		`- .map_or(false, \|(entry_fn_def_id, _)\| def_id == entry_fn_def_id.to_def_id())`
	`681`	`+ .map_or(false, \|(entry_fn_def_id, _)\| def_id == entry_fn_def_id)`
`682`	`682`	`}`
`683`	`683`
`684`	`684`	/// Returns `true` if the expression is in the program's `#[panic_handler]`.