1 files changed, 94 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/source/issue-3029.rs b/src/tools/rustfmt/tests/source/issue-3029.rs
new file mode 100644
index 00000000000..a7ac5c32b06
--- /dev/null
+++ b/src/tools/rustfmt/tests/source/issue-3029.rs
@@ -0,0 +1,94 @@
+fn keep_if() {
+    {
+        {
+            {
+                EvaluateJSReply::NumberValue(
+                    if FromJSValConvertible::from_jsval(cx, rval.handle(), ()) {
+                        unimplemented!();
+                    },
+                )
+            }
+        }
+    }
+}
+
+fn keep_if_let() {
+    {
+        {
+            {
+                EvaluateJSReply::NumberValue(
+                    if let Some(e) = FromJSValConvertible::from_jsval(cx, rval.handle(), ()) {
+                        unimplemented!();
+                    },
+                )
+            }
+        }
+    }
+}
+
+fn keep_for() {
+    {
+        {
+            {
+                EvaluateJSReply::NumberValue(
+                    for conv in FromJSValConvertible::from_jsval(cx, rval.handle(), ()) {
+                        unimplemented!();
+                    },
+                )
+            }
+        }
+    }
+}
+
+fn keep_loop() {
+    {
+        {
+            {
+                EvaluateJSReply::NumberValue(loop {
+                    FromJSValConvertible::from_jsval(cx, rval.handle(), ());
+                })
+            }
+        }
+    }
+}
+
+fn keep_while() {
+    {
+        {
+            {
+                EvaluateJSReply::NumberValue(
+                    while FromJSValConvertible::from_jsval(cx, rval.handle(), ()) {
+                        unimplemented!();
+                    },
+                )
+            }
+        }
+    }
+}
+
+fn keep_while_let() {
+    {
+        {
+            {
+                EvaluateJSReply::NumberValue(
+                    while let Some(e) = FromJSValConvertible::from_jsval(cx, rval.handle(), ()) {
+                        unimplemented!();
+                    },
+                )
+            }
+        }
+    }
+}
+
+fn keep_match() {
+    {
+        {
+            EvaluateJSReply::NumberValue(
+                match FromJSValConvertible::from_jsval(cx, rval.handle(), ()) {
+                    Ok(ConversionResult::Success(v)) => v,
+                    _ => unreachable!(),
+                },
+            )
+        }
+    }
+}