Add an issue test

integration_tests/CMakeLists.txt

@@ -640,6 +640,7 @@ RUN(NAME structs_31          LABELS cpython llvm c)
 RUN(NAME structs_32          LABELS cpython llvm c)
 RUN(NAME structs_33          LABELS cpython llvm c)
 RUN(NAME structs_34          LABELS cpython llvm c)
+RUN(NAME structs_35          LABELS cpython llvm)
 
 RUN(NAME symbolics_01        LABELS cpython_sym c_sym)
 RUN(NAME symbolics_02        LABELS cpython_sym c_sym)

integration_tests/structs_35.py

@@ -0,0 +1,34 @@
+from lpython import (i8, i32, i64, f32, f64,
+                     dataclass
+                     )
+from numpy import (empty,
+                   int8,
+                   )
+
+# test issue 2131
+
+r : i8 = i8(240)
+
+@dataclass
+class Foo:
+    a : i8[4] = empty(4, dtype=int8)
+    dim : i32 = 4
+
+def trinary_majority(x : Foo, y : Foo, z : Foo) -> Foo:
+    foo : Foo = Foo()
+
+    assert foo.dim == x.dim == y.dim == z.dim
+
+    return foo
+
+
+t1 : Foo = Foo()
+t1.a = empty(4, dtype=int8)
+
+t2 : Foo = Foo()
+t2.a = empty(4, dtype=int8)
+
+t3 : Foo = Foo()
+t3.a = empty(4, dtype=int8)
+
+r1 : Foo = trinary_majority(t1, t2, t3)