testsuite/gna: add test for #922

2 files changed, 33 insertions, 0 deletions

diff --git a/testsuite/gna/issue922/dut.vhdl b/testsuite/gna/issue922/dut.vhdl
new file mode 100644
index 000000000..acb8c951f
--- /dev/null
+++ b/testsuite/gna/issue922/dut.vhdl
@@ -0,0 +1,22 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity dut is
+generic (
+    adr_width : positive := 16
+);
+end entity dut;
+architecture rtl of dut is
+    function deser(b : bit_vector) return bit_vector is
+        variable ab : bit_vector(adr_width-1 downto 0);
+        variable ba : bit_vector(adr_width-1 downto 0);
+    begin
+        -- Below causes crash
+        (ab, ba) := b;
+        return ab&ba;
+    end function;
+    signal s1 : bit_vector(adr_width*2-1 downto 0);
+    signal s2 : bit_vector(adr_width-1 downto 0);
+begin
+    s1 <= deser(s2);
+end architecture rtl;
diff --git a/testsuite/gna/issue922/testsuite.sh b/testsuite/gna/issue922/testsuite.sh
new file mode 100755
index 000000000..0a831521f
--- /dev/null
+++ b/testsuite/gna/issue922/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+export GHDL_STD_FLAGS=--std=08
+analyze dut.vhdl
+elab_simulate dut
+
+clean
+
+echo "Test successful"