1 files changed, 43 insertions, 0 deletions
diff --git a/tests/coverage-map/simple_match.rs b/tests/coverage-map/simple_match.rs
new file mode 100644
index 00000000000..be99e59a826
--- /dev/null
+++ b/tests/coverage-map/simple_match.rs
@@ -0,0 +1,43 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 1;
+    if is_true {
+        countdown = 0;
+    }
+
+    for
+        _
+    in
+        0..2
+    {
+        let z
+        ;
+        match
+            countdown
+        {
+            x
+            if
+                x
+                    <
+                1
+            =>
+            {
+                z = countdown
+                ;
+                let y = countdown
+                ;
+                countdown = 10
+                ;
+            }
+            _
+            =>
+            {}
+        }
+    }
+}