Adding upstream version 126.0.upstream/126.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3 insertions, 9 deletions

diff --git a/third_party/rust/wast/src/parser.rs b/third_party/rust/wast/src/parser.rs
index 0c85923f83..7a20ebe255 100644
--- a/third_party/rust/wast/src/parser.rs
+++ b/third_party/rust/wast/src/parser.rs
@@ -65,6 +65,7 @@
 use crate::lexer::{Float, Integer, Lexer, Token, TokenKind};
 use crate::token::Span;
 use crate::Error;
+use bumpalo::Bump;
 use std::borrow::Cow;
 use std::cell::{Cell, RefCell};
 use std::collections::HashMap;
@@ -303,7 +304,7 @@ pub struct ParseBuffer<'a> {
     cur: Cell<Position>,
     known_annotations: RefCell<HashMap<String, usize>>,
     depth: Cell<usize>,
-    strings: RefCell<Vec<Box<[u8]>>>,
+    strings: Bump,
 }
 
 /// The current position within a `Lexer` that we're at. This simultaneously
@@ -396,14 +397,7 @@ impl ParseBuffer<'_> {
     /// This will return a reference to `s`, but one that's safely rooted in the
     /// `Parser`.
     fn push_str(&self, s: Vec<u8>) -> &[u8] {
-        let s = Box::from(s);
-        let ret = &*s as *const [u8];
-        self.strings.borrow_mut().push(s);
-        // This should be safe in that the address of `ret` isn't changing as
-        // it's on the heap itself. Additionally the lifetime of this return
-        // value is tied to the lifetime of `self` (nothing is deallocated
-        // early), so it should be safe to say the two have the same lifetime.
-        unsafe { &*ret }
+        self.strings.alloc_slice_copy(&s)
     }
 
     /// Lexes the next "significant" token from the `pos` specified.