Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 31 insertions, 0 deletions

diff --git a/tests/ui/proc-macro/auxiliary/resolved-located-at.rs b/tests/ui/proc-macro/auxiliary/resolved-located-at.rs
new file mode 100644
index 000000000..db660824f
--- /dev/null
+++ b/tests/ui/proc-macro/auxiliary/resolved-located-at.rs
@@ -0,0 +1,31 @@
+// force-host
+// no-prefer-dynamic
+
+#![feature(proc_macro_def_site)]
+#![feature(proc_macro_diagnostic)]
+#![feature(proc_macro_quote)]
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::*;
+
+#[proc_macro]
+pub fn resolve_located_at(input: TokenStream) -> TokenStream {
+    match &*input.into_iter().collect::<Vec<_>>() {
+        [a, b, ..] => {
+            // The error is reported at input `a`.
+            let mut diag = Diagnostic::new(Level::Error, "expected error");
+            diag.set_spans(Span::def_site().located_at(a.span()));
+            diag.emit();
+
+            // Resolves to `struct S;` at def site, but the error is reported at input `b`.
+            let s = TokenTree::Ident(Ident::new("S", b.span().resolved_at(Span::def_site())));
+            quote!({
+                struct S;
+
+                $s
+            })
+        }
+        _ => panic!("unexpected input"),
+    }
+}