lib.data: fix Layout.const masking for signed fields.

Fixes #846.
2023-07-22 02:21:59 +02:00 · 2023-07-22 02:21:59 +02:00 · f6c38061ff
commit f6c38061ff
parent 7a9dbc8c11
2 changed files with 9 additions and 2 deletions
--- a/tests/test_lib_data.py
+++ b/tests/test_lib_data.py
@ -398,6 +398,12 @@ class LayoutTestCase(FHDLTestCase):
        self.assertRepr(fl.const({"b": 0b10}), "(const 2'd2)")
        self.assertRepr(fl.const({"a": 0b1, "b": 0b10}), "(const 2'd2)")

+        sls = StructLayout({
+            "a": signed(4),
+            "b": signed(4)
+        })
+        self.assertRepr(sls.const({"b": 0, "a": -1}), "(const 8'd15)")
+
    def test_const_wrong(self):
        sl = StructLayout({"f": unsigned(1)})
        with self.assertRaisesRegex(TypeError,