Auto merge of #126951 - matthiaskrgr:rollup-xg0o4mc, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #126618 (Mark assoc tys live only if the corresponding trait is live)
 - #126746 (Deny `use<>` for RPITITs)
 - #126868 (not use offset when there is not ends with brace)
 - #126884 (Do not ICE when suggesting dereferencing closure arg)
 - #126893 (Eliminate the distinction between PREC_POSTFIX and PREC_PAREN precedence level)
 - #126915 (Don't suggest awaiting in closure patterns)
 - #126943 (De-duplicate all consecutive native libs regardless of their options)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

compiler/rustc_ast/src/util/parser.rs

@@ -233,8 +233,7 @@ pub const PREC_JUMP: i8 = -30;
 pub const PREC_RANGE: i8 = -10;
 // The range 2..=14 is reserved for AssocOp binary operator precedences.
 pub const PREC_PREFIX: i8 = 50;
-pub const PREC_POSTFIX: i8 = 60;
-pub const PREC_PAREN: i8 = 99;
+pub const PREC_UNAMBIGUOUS: i8 = 60;
 pub const PREC_FORCE_PAREN: i8 = 100;
 
 #[derive(Debug, Clone, Copy)]
@@ -325,37 +324,35 @@ impl ExprPrecedence {
             | ExprPrecedence::Let
             | ExprPrecedence::Unary => PREC_PREFIX,
 
-            // Unary, postfix
-            ExprPrecedence::Await
+            // Never need parens
+            ExprPrecedence::Array
+            | ExprPrecedence::Await
+            | ExprPrecedence::Block
             | ExprPrecedence::Call
-            | ExprPrecedence::MethodCall
+            | ExprPrecedence::ConstBlock
             | ExprPrecedence::Field
+            | ExprPrecedence::ForLoop
+            | ExprPrecedence::FormatArgs
+            | ExprPrecedence::Gen
+            | ExprPrecedence::If
             | ExprPrecedence::Index
-            | ExprPrecedence::Try
             | ExprPrecedence::InlineAsm
+            | ExprPrecedence::Lit
+            | ExprPrecedence::Loop
             | ExprPrecedence::Mac
-            | ExprPrecedence::FormatArgs
+            | ExprPrecedence::Match
+            | ExprPrecedence::MethodCall
             | ExprPrecedence::OffsetOf
-            | ExprPrecedence::PostfixMatch => PREC_POSTFIX,
-
-            // Never need parens
-            ExprPrecedence::Array
+            | ExprPrecedence::Paren
+            | ExprPrecedence::Path
+            | ExprPrecedence::PostfixMatch
             | ExprPrecedence::Repeat
+            | ExprPrecedence::Struct
+            | ExprPrecedence::Try
+            | ExprPrecedence::TryBlock
             | ExprPrecedence::Tup
-            | ExprPrecedence::Lit
-            | ExprPrecedence::Path
-            | ExprPrecedence::Paren
-            | ExprPrecedence::If
             | ExprPrecedence::While
-            | ExprPrecedence::ForLoop
-            | ExprPrecedence::Loop
-            | ExprPrecedence::Match
-            | ExprPrecedence::ConstBlock
-            | ExprPrecedence::Block
-            | ExprPrecedence::TryBlock
-            | ExprPrecedence::Gen
-            | ExprPrecedence::Struct
-            | ExprPrecedence::Err => PREC_PAREN,
+            | ExprPrecedence::Err => PREC_UNAMBIGUOUS,
         }
     }
 }

compiler/rustc_ast_lowering/messages.ftl

@@ -130,6 +130,9 @@ ast_lowering_never_pattern_with_guard =
 
 ast_lowering_no_precise_captures_on_apit = `use<...>` precise capturing syntax not allowed in argument-position `impl Trait`
 
+ast_lowering_no_precise_captures_on_rpitit = `use<...>` precise capturing syntax is currently not allowed in return-position `impl Trait` in traits
+    .note = currently, return-position `impl Trait` in traits and trait implementations capture all lifetimes in scope
+
 ast_lowering_previously_used_here = previously used here
 
 ast_lowering_register1 = register `{$reg1_name}`