1 files changed, 42 insertions, 0 deletions
diff --git a/tests/run-coverage/while_early_ret.rs b/tests/run-coverage/while_early_ret.rs
new file mode 100644
index 000000000..1c83c8fc7
--- /dev/null
+++ b/tests/run-coverage/while_early_ret.rs
@@ -0,0 +1,42 @@
+#![allow(unused_assignments)]
+// failure-status: 1
+
+fn main() -> Result<(),u8> {
+    let mut countdown = 10;
+    while
+        countdown
+            >
+        0
+    {
+        if
+            countdown
+                <
+            5
+        {
+            return
+                if
+                    countdown
+                        >
+                    8
+                {
+                    Ok(())
+                }
+                else
+                {
+                    Err(1)
+                }
+                ;
+        }
+        countdown
+            -=
+        1
+        ;
+    }
+    Ok(())
+}
+
+// ISSUE(77553): Originally, this test had `Err(1)` on line 22 (instead of `Ok(())`) and
+// `std::process::exit(2)` on line 26 (instead of `Err(1)`); and this worked as expected on Linux
+// and MacOS. But on Windows (MSVC, at least), the call to `std::process::exit()` exits the program
+// without saving the InstrProf coverage counters. The use of `std::process:exit()` is not critical
+// to the coverage test for early returns, but this is a limitation that should be fixed.