2 files changed, 42 insertions, 0 deletions
diff --git a/modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.gd b/modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.gd
new file mode 100644
index 0000000000..f33ba7dffd
--- /dev/null
+++ b/modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.gd
@@ -0,0 +1,25 @@
+# https://github.com/godotengine/godot/pull/69620
+
+var a: int = 1
+
+func shadow_regular_assignment(a: Variant, b: Variant) -> void:
+  print(a)
+  print(self.a)
+  a = b
+  print(a)
+  print(self.a)
+
+
+var v := Vector2(0.0, 0.0)
+
+func shadow_subscript_assignment(v: Vector2, x: float) -> void:
+  print(v)
+  print(self.v)
+  v.x += x
+  print(v)
+  print(self.v)
+
+
+func test():
+  shadow_regular_assignment('a', 'b')
+  shadow_subscript_assignment(Vector2(1.0, 1.0), 5.0)
diff --git a/modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.out b/modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.out
new file mode 100644
index 0000000000..5b981bc8bb
--- /dev/null
+++ b/modules/gdscript/tests/scripts/runtime/features/parameter_shadowing.out
@@ -0,0 +1,17 @@
+GDTEST_OK
+>> WARNING
+>> Line: 5
+>> SHADOWED_VARIABLE
+>> The local function parameter "a" is shadowing an already-declared variable at line 3.
+>> WARNING
+>> Line: 15
+>> SHADOWED_VARIABLE
+>> The local function parameter "v" is shadowing an already-declared variable at line 13.
+a
+1
+b
+1
+(1, 1)
+(0, 0)
+(6, 1)
+(0, 0)