1 files changed, 28 insertions, 0 deletions
diff --git a/test/behavior/underscore.zig b/test/behavior/underscore.zig
new file mode 100644
index 0000000000..516d33a4eb
--- /dev/null
+++ b/test/behavior/underscore.zig
@@ -0,0 +1,28 @@
+const std = @import("std");
+const expect = std.testing.expect;
+
+test "ignore lval with underscore" {
+    _ = false;
+}
+
+test "ignore lval with underscore (for loop)" {
+    for ([_]void{}) |_, i| {
+        for ([_]void{}) |_, j| {
+            break;
+        }
+        break;
+    }
+}
+
+test "ignore lval with underscore (while loop)" {
+    while (optionalReturnError()) |_| {
+        while (optionalReturnError()) |_| {
+            break;
+        } else |_| {}
+        break;
+    } else |_| {}
+}
+
+fn optionalReturnError() !?u32 {
+    return error.optionalReturnError;
+}