1 files changed, 17 insertions, 0 deletions
diff --git a/testsuite/synth/issue1313/issue.vhdl b/testsuite/synth/issue1313/issue.vhdl
new file mode 100644
index 000000000..7c5a7a938
--- /dev/null
+++ b/testsuite/synth/issue1313/issue.vhdl
@@ -0,0 +1,17 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity issue is
+end issue;
+
+architecture beh of issue is
+begin
+    assert "+"(unsigned'("0001"), unsigned'("0001")) = unsigned'("0010");
+    assert "-"(unsigned'("0001"), unsigned'("0001")) = unsigned'("0000");
+    assert "="(unsigned'("0001"), unsigned'("0001"));
+
+    assert "+"(signed'("0001"), signed'("0001")) = signed'("0010");
+    assert "-"(signed'("0001"), signed'("0001")) = signed'("0000");
+    assert "="(signed'("0001"), signed'("0001"));
+end architecture beh;