Auto merge of #67903 - Dylan-DPC:rollup-k9djyrf, r=Dylan-DPC

Rollup of 5 pull requests

Successful merges:

 - #67818 (rustdoc: Avoid panic when parsing codeblocks for playground links)
 - #67845 (Also remove const-hack for abs)
 - #67879 (Remove negative number check from float sqrt)
 - #67881 (Add backticks to various diagnostics)
 - #67882 (remove bespoke flock bindings)

Failed merges:

r? @ghost

1 files changed, 21 insertions, 0 deletions

diff --git a/src/test/rustdoc/playground-syntax-error.rs b/src/test/rustdoc/playground-syntax-error.rs
new file mode 100644
index 00000000000..8918ae874f8
--- /dev/null
+++ b/src/test/rustdoc/playground-syntax-error.rs
@@ -0,0 +1,21 @@
+#![crate_name = "foo"]
+#![doc(html_playground_url = "https://play.rust-lang.org/")]
+
+/// bar docs
+///
+/// ```edition2015
+/// use std::future::Future;
+/// use std::pin::Pin;
+/// fn foo_recursive(n: usize) -> Pin<Box<dyn Future<Output = ()>>> {
+///     Box::pin(async move {
+///         if n > 0 {
+///             foo_recursive(n - 1).await;
+///         }
+///     })
+/// }
+/// ```
+pub fn bar() {}
+
+// @has foo/fn.bar.html
+// @has - '//a[@class="test-arrow"]' "Run"
+// @has - '//*[@class="docblock"]' 'foo_recursive'