Re-add support for parsing (and pretty-printing) inner-attributes within body of a `match`.

In other words, we can do `match EXPR { #![inner_attr] ARM_1 ARM_2 ... }` again.

I believe this unbreaks the only four crates that crater flagged as broken by PR 83312.

(I am putting this up so that the lang-team can check it out and decide whether
it changes their mind about what to do regarding PR 83312.)

1 files changed, 5 insertions, 0 deletions

diff --git a/compiler/rustc_ast_pretty/src/pprust/state.rs b/compiler/rustc_ast_pretty/src/pprust/state.rs
index fdcb68cf421..bcb595f3a04 100644
--- a/compiler/rustc_ast_pretty/src/pprust/state.rs
+++ b/compiler/rustc_ast_pretty/src/pprust/state.rs
@@ -366,6 +366,10 @@ pub trait PrintState<'a>: std::ops::Deref<Target = pp::Printer> + std::ops::Dere
         self.print_either_attributes(attrs, ast::AttrStyle::Inner, false, true)
     }
 
+    fn print_inner_attributes_no_trailing_hardbreak(&mut self, attrs: &[ast::Attribute]) {
+        self.print_either_attributes(attrs, ast::AttrStyle::Inner, false, false)
+    }
+
     fn print_outer_attributes(&mut self, attrs: &[ast::Attribute]) {
         self.print_either_attributes(attrs, ast::AttrStyle::Outer, false, true)
     }
@@ -1940,6 +1944,7 @@ impl<'a> State<'a> {
                 self.print_expr_as_cond(expr);
                 self.s.space();
                 self.bopen();
+                self.print_inner_attributes_no_trailing_hardbreak(attrs);
                 for arm in arms {
                     self.print_arm(arm);
                 }