From 902cfd1df9b55f78f180c37f1acf8e5f2bd164fd Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Sun, 26 Apr 2020 16:47:25 +0200
Subject: testsuite/synth: add test for #1265

---
 testsuite/synth/issue1265/issue.vhdl   | 14 ++++++++++++++
 testsuite/synth/issue1265/testsuite.sh |  8 ++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 testsuite/synth/issue1265/issue.vhdl
 create mode 100755 testsuite/synth/issue1265/testsuite.sh

diff --git a/testsuite/synth/issue1265/issue.vhdl b/testsuite/synth/issue1265/issue.vhdl
new file mode 100644
index 000000000..098305fa4
--- /dev/null
+++ b/testsuite/synth/issue1265/issue.vhdl
@@ -0,0 +1,14 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity issue is
+    port (sub_uns : out unsigned (8-1 downto 0);
+          sub_sgn : out   signed (8-1 downto 0));
+end issue;
+
+architecture beh of issue is
+begin
+    sub_uns <= unsigned'(b"0000_0000") - 1; -- works
+    sub_sgn <=   signed'(b"0000_0000") - 1; -- fails
+end architecture beh;
diff --git a/testsuite/synth/issue1265/testsuite.sh b/testsuite/synth/issue1265/testsuite.sh
new file mode 100755
index 000000000..30f40648a
--- /dev/null
+++ b/testsuite/synth/issue1265/testsuite.sh
@@ -0,0 +1,8 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+synth_analyze issue
+clean
+
+echo "Test successful"
-- 
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