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diff --git a/src/test/ui/half-open-range-patterns/half-open-range-pats-inclusive-dotdotdot-bad-syntax.rs b/src/test/ui/half-open-range-patterns/half-open-range-pats-inclusive-dotdotdot-bad-syntax.rs
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+++ b/src/test/ui/half-open-range-patterns/half-open-range-pats-inclusive-dotdotdot-bad-syntax.rs
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+// Test that `...X` range-to patterns are syntactically invalid.
+//
+// See https://github.com/rust-lang/rust/pull/67258#issuecomment-565656155
+// for the reason why. To summarize, we might want to introduce `...expr` as
+// an expression form for splatting (or "untupling") in an expression context.
+// While there is no syntactic ambiguity with `...X` in a pattern context,
+// there's a potential confusion factor here, and we would prefer to keep patterns
+// and expressions in-sync. As such, we do not allow `...X` in patterns either.
+
+#![feature(half_open_range_patterns)]
+
+fn main() {}
+
+#[cfg(FALSE)]
+fn syntax() {
+    match scrutinee {
+        ...X => {} //~ ERROR range-to patterns with `...` are not allowed
+        ...0 => {} //~ ERROR range-to patterns with `...` are not allowed
+        ...'a' => {} //~ ERROR range-to patterns with `...` are not allowed
+        ...0.0f32 => {} //~ ERROR range-to patterns with `...` are not allowed
+    }
+}
+
+fn syntax2() {
+    macro_rules! mac {
+        ($e:expr) => {
+            let ...$e; //~ ERROR range-to patterns with `...` are not allowed
+        }
+    }
+
+    mac!(0);
+}