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-rw-r--r--src/tools/clippy/tests/ui/unused_rounding.rs8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unused_rounding.rs b/src/tools/clippy/tests/ui/unused_rounding.rs
index 8d007bc4a..a0267d814 100644
--- a/src/tools/clippy/tests/ui/unused_rounding.rs
+++ b/src/tools/clippy/tests/ui/unused_rounding.rs
@@ -6,4 +6,12 @@ fn main() {
let _ = 1.0f64.floor();
let _ = 1.00f32.round();
let _ = 2e-54f64.floor();
+
+ // issue9866
+ let _ = 3.3_f32.round();
+ let _ = 3.3_f64.round();
+ let _ = 3.0_f32.round();
+
+ let _ = 3_3.0_0_f32.round();
+ let _ = 3_3.0_1_f64.round();
}