1 files changed, 15 insertions, 0 deletions
diff --git a/test/libsolidity/syntaxTests/types/mapping/assignment_local.sol b/test/libsolidity/syntaxTests/types/mapping/assignment_local.sol
new file mode 100644
index 00000000..ba01c44a
--- /dev/null
+++ b/test/libsolidity/syntaxTests/types/mapping/assignment_local.sol
@@ -0,0 +1,15 @@
+contract test {
+    mapping(uint=>uint) map;
+    function fun() public view {
+        mapping(uint=>uint) storage a = map;
+        mapping(uint=>uint) storage b = map;
+        b = a;
+        (b) = a;
+        (b, b) = (a, a);
+    }
+}
+// ----
+// TypeError: (176-177): Mappings cannot be assigned to.
+// TypeError: (192-193): Mappings cannot be assigned to.
+// TypeError: (209-210): Mappings cannot be assigned to.
+// TypeError: (212-213): Mappings cannot be assigned to.