4 files changed, 69 insertions, 0 deletions
diff --git a/testsuite/gna/issue2189/bug02.vhdl b/testsuite/gna/issue2189/bug02.vhdl
new file mode 100644
index 000000000..c6dd7841b
--- /dev/null
+++ b/testsuite/gna/issue2189/bug02.vhdl
@@ -0,0 +1,21 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+use work.all;
+
+entity bug02 is
+end bug02;
+
+architecture rtl of bug02 is
+    FUNCTION weird (bw : integer range 2 to 32)
+        RETURN INTEGER IS
+    BEGIN
+        RETURN -(2**(bw - 1));
+    END weird;
+begin
+    process
+    begin
+        report to_string(weird(10));
+        wait;
+    end process;
+end architecture;
diff --git a/testsuite/gna/issue2189/conv.on b/testsuite/gna/issue2189/conv.on
new file mode 100644
index 000000000..5138e93fd
--- /dev/null
+++ b/testsuite/gna/issue2189/conv.on
@@ -0,0 +1,19 @@
+TYPE __ghdl_i32 IS SIGNED (32);
+
+TYPE __ghdl_i64 IS SIGNED (64);
+
+TYPE std__standard__integer__BT IS SIGNED (32);
+
+EXTERNAL FUNCTION __ghdl_i64_exp (
+  left: __ghdl_i64;
+  right: std__standard__integer__BT)
+  RETURN __ghdl_i64;
+
+PUBLIC FUNCTION conv  (
+  bw: std__standard__integer__BT)
+  RETURN std__standard__integer__BT
+DECLARE
+BEGIN
+  RETURN -std__standard__integer__BT'conv# (__ghdl_i64_exp (__ghdl_i64'conv# (
+    std__standard__integer__BT'[2]), (bw -# 1)));
+END;
diff --git a/testsuite/gna/issue2189/repro01.vhdl b/testsuite/gna/issue2189/repro01.vhdl
new file mode 100644
index 000000000..55e3fc455
--- /dev/null
+++ b/testsuite/gna/issue2189/repro01.vhdl
@@ -0,0 +1,18 @@
+entity bug02 is
+end bug02;
+
+architecture rtl of bug02 is
+    FUNCTION weird (bw : integer range 2 to 32)
+        RETURN INTEGER IS
+    BEGIN
+        RETURN -(2**(bw - 1));
+    END weird;
+begin
+    process
+        constant c : integer := weird (10);
+    begin
+        report natural'image(c);
+        assert c = -512 severity failure;
+        wait;
+    end process;
+end architecture;
diff --git a/testsuite/gna/issue2189/testsuite.sh b/testsuite/gna/issue2189/testsuite.sh
new file mode 100755
index 000000000..ea1bc3ed7
--- /dev/null
+++ b/testsuite/gna/issue2189/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+GHDL_STD_FLAGS=--std=08
+analyze bug02.vhdl
+elab_simulate bug02
+
+clean
+
+echo "Test successful"