Auto merge of #99324 - reez12g:issue-99144, r=jyn514

Enable doctests in compiler/ crates

Helps with #99144

Author: bors

compiler/rustc_ast/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.0.0"
 edition = "2021"
 
 [lib]
-doctest = false
 
 [dependencies]
 bitflags = "1.2.1"

compiler/rustc_ast_lowering/src/expr.rs

@@ -1609,11 +1609,11 @@ impl<'hir> LoweringContext<'_, 'hir> {
     }
 
     /// Desugar `ExprKind::Yeet` from: `do yeet <expr>` into:
-    /// ```rust
+    /// ```ignore(illustrative)
     /// // If there is an enclosing `try {...}`:
-    /// break 'catch_target FromResidual::from_residual(Yeet(residual)),
+    /// break 'catch_target FromResidual::from_residual(Yeet(residual));
     /// // Otherwise:
-    /// return FromResidual::from_residual(Yeet(residual)),
+    /// return FromResidual::from_residual(Yeet(residual));
     /// ```
     /// But to simplify this, there's a `from_yeet` lang item function which
     /// handles the combined `FromResidual::from_residual(Yeet(residual))`.

compiler/rustc_ast_pretty/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.0.0"
 edition = "2021"
 
 [lib]
-doctest = false
 
 [dependencies]
 rustc_span = { path = "../rustc_span" }

compiler/rustc_attr/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.0.0"
 edition = "2021"
 
 [lib]
-doctest = false
 
 [dependencies]
 rustc_ast_pretty = { path = "../rustc_ast_pretty" }

compiler/rustc_borrowck/Cargo.toml

@@ -4,7 +4,6 @@ version = "0.0.0"
 edition = "2021"
 
 [lib]
-doctest = false
 
 [dependencies]
 either = "1.5.0"

compiler/rustc_borrowck/src/diagnostics/region_errors.rs

@@ -341,7 +341,7 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, 'tcx> {
     /// Report an error because the universal region `fr` was required to outlive
     /// `outlived_fr` but it is not known to do so. For example:
     ///
-    /// ```compile_fail,E0312
+    /// ```compile_fail
     /// fn foo<'a, 'b>(x: &'a u32) -> &'b u32 { x }
     /// ```
     ///

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -1398,7 +1398,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
     /// whether any of the constraints were too strong. In particular,
     /// we want to check for a case where a universally quantified
     /// region exceeded its bounds. Consider:
-    /// ```compile_fail,E0312
+    /// ```compile_fail
     /// fn foo<'a, 'b>(x: &'a u32) -> &'b u32 { x }
     /// ```
     /// In this case, returning `x` requires `&'a u32 <: &'b u32`
@@ -1451,7 +1451,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
     /// <https://smallcultfollowing.com/babysteps/blog/2019/01/17/polonius-and-region-errors/>
     ///
     /// In the canonical example
-    /// ```compile_fail,E0312
+    /// ```compile_fail
     /// fn foo<'a, 'b>(x: &'a u32) -> &'b u32 { x }
     /// ```
     /// returning `x` requires `&'a u32 <: &'b u32` and hence we establish (transitively) a

compiler/rustc_builtin_macros/src/assert/context.rs

@@ -58,6 +58,7 @@ impl<'cx, 'a> Context<'cx, 'a> {
     /// Builds the whole `assert!` expression. For example, `let elem = 1; assert!(elem == 1);` expands to:
     ///
     /// ```rust
+    /// #![feature(generic_assert_internals)]
     /// let elem = 1;
     /// {
     ///   #[allow(unused_imports)]
@@ -70,7 +71,7 @@ impl<'cx, 'a> Context<'cx, 'a> {
     ///       __local_bind0
     ///     } == 1
     ///   ) {
-    ///     panic!("Assertion failed: elem == 1\nWith captures:\n  elem = {}", __capture0)
+    ///     panic!("Assertion failed: elem == 1\nWith captures:\n  elem = {:?}", __capture0)
     ///   }
     /// }
     /// ```

compiler/rustc_builtin_macros/src/deriving/generic/mod.rs

@@ -1114,6 +1114,11 @@ impl<'a> MethodDef<'a> {
     /// ```
     /// is equivalent to:
     /// ```
+    /// #![feature(core_intrinsics)]
+    /// enum A {
+    ///     A1,
+    ///     A2(i32)
+    /// }
     /// impl ::core::cmp::PartialEq for A {
     ///     #[inline]
     ///     fn eq(&self, other: &A) -> bool {

compiler/rustc_codegen_llvm/Cargo.toml

@@ -5,7 +5,6 @@ edition = "2021"
 
 [lib]
 test = false
-doctest = false
 
 [dependencies]
 bitflags = "1.0"