Auto merge of #62990 - Centril:rollup-k9n0hvs, r=Centril

Rollup of 15 pull requests

Successful merges:

 - #60066 (Stabilize the type_name intrinsic in core::any)
 - #60938 (rustdoc: make #[doc(include)] relative to the containing file)
 - #61884 (Stablize Euclidean Modulo (feature euclidean_division))
 - #61890 (Fix some sanity checks)
 - #62528 (Add joining slices of slices with a slice separator, not just a single item)
 - #62707 (Add tests for overlapping explicitly dropped locals in generators)
 - #62735 (Turn `#[global_allocator]` into a regular attribute macro)
 - #62822 (Improve some pointer-related documentation)
 - #62887 (Make the parser TokenStream more resilient after mismatched delimiter recovery)
 - #62921 (Add method disambiguation help for trait implementation)
 - #62930 (Add test for #51559)
 - #62942 (Use match ergonomics in Condvar documentation)
 - #62977 (Fix inconsistent highlight blocks.)
 - #62978 (Remove `cfg(bootstrap)` code for array implementations)
 - #62981 (Add note suggesting to borrow a String argument to find)

Failed merges:

 - #62964 (clarify and unify some type test names)

r? @ghost

1 files changed, 14 insertions, 1 deletions

diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index da388694637..a5b6f0d6836 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -7671,6 +7671,11 @@ impl<'a> Parser<'a> {
         let ret = f(self);
         let last_token = if self.token_cursor.stack.len() == prev {
             &mut self.token_cursor.frame.last_token
+        } else if self.token_cursor.stack.get(prev).is_none() {
+            // This can happen due to a bad interaction of two unrelated recovery mechanisms with
+            // mismatched delimiters *and* recovery lookahead on the likely typo `pub ident(`
+            // (#62881).
+            return Ok((ret?, TokenStream::new(vec![])));
         } else {
             &mut self.token_cursor.stack[prev].last_token
         };
@@ -7678,7 +7683,15 @@ impl<'a> Parser<'a> {
         // Pull out the tokens that we've collected from the call to `f` above.
         let mut collected_tokens = match *last_token {
             LastToken::Collecting(ref mut v) => mem::take(v),
-            LastToken::Was(_) => panic!("our vector went away?"),
+            LastToken::Was(ref was) => {
+                let msg = format!("our vector went away? - found Was({:?})", was);
+                debug!("collect_tokens: {}", msg);
+                self.sess.span_diagnostic.delay_span_bug(self.token.span, &msg);
+                // This can happen due to a bad interaction of two unrelated recovery mechanisms
+                // with mismatched delimiters *and* recovery lookahead on the likely typo
+                // `pub ident(` (#62895, different but similar to the case above).
+                return Ok((ret?, TokenStream::new(vec![])));
+            }
         };
 
         // If we're not at EOF our current token wasn't actually consumed by