1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/macros/same-sequence-span.rs b/src/test/ui/macros/same-sequence-span.rs
new file mode 100644
index 000000000..e0bb4d985
--- /dev/null
+++ b/src/test/ui/macros/same-sequence-span.rs
@@ -0,0 +1,22 @@
+// aux-build:proc_macro_sequence.rs
+
+// Regression test for issue #62831: Check that multiple sequences with the same span in the
+// left-hand side of a macro definition behave as if they had unique spans, and in particular that
+// they don't crash the compiler.
+
+#![allow(unused_macros)]
+
+extern crate proc_macro_sequence;
+
+// When ignoring spans, this macro has the same macro definition as `generated_foo` in
+// `proc_macro_sequence.rs`.
+macro_rules! manual_foo {
+    (1 $x:expr $($y:tt,)*   //~ERROR `$x:expr` may be followed by `$y:tt`
+               $(= $z:tt)*  //~ERROR `$x:expr` may be followed by `=`
+    ) => {};
+}
+
+proc_macro_sequence::make_foo!(); //~ERROR `$x:expr` may be followed by `$y:tt`
+                                  //~^ERROR `$x:expr` may be followed by `=`
+
+fn main() {}