5 files changed, 140 insertions, 0 deletions
diff --git a/testsuite/gna/issue616/mwe.vhdl b/testsuite/gna/issue616/mwe.vhdl
new file mode 100644
index 000000000..c791e1218
--- /dev/null
+++ b/testsuite/gna/issue616/mwe.vhdl
@@ -0,0 +1,76 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity mwe is
+  generic (
+    wait_us : integer := 400;
+    clk_period : time := 10 ns
+  );
+end entity;
+
+architecture sim of mwe is
+
+  signal clk : std_logic := '0';
+  signal runsim : boolean := true;
+
+  function slv_all(constant width : in integer; constant value : in std_logic) return std_logic_vector is
+    variable slv_v : std_logic_vector(width - 1 downto 0) := (others => value);
+  begin
+    return slv_v;
+  end function;
+
+  function slv_ones(constant width : in integer) return std_logic_vector is
+  begin
+    return slv_all(width, '1');
+  end function;
+
+
+begin
+
+  p_clk: process
+  begin
+    while runsim loop
+      clk <= '0';
+      wait for clk_period / 2;
+      clk <= '1';
+      wait for clk_period / 2;
+    end loop;
+    wait;
+  end process;
+
+
+  p_check_requests: process
+
+    function return_true return boolean is
+      constant ones_c : std_logic_vector(31 downto 0) := slv_ones(32);
+    begin
+      return true;
+    end function;
+
+    variable ones_v : std_logic_vector(31 downto 0);
+    variable result_v : boolean;
+  begin
+    wait until rising_edge(clk);
+
+    while runsim loop
+      wait until rising_edge(clk);
+
+      result_v := return_true;
+
+      -- uncommenting the following lines speeds up the design
+      -- ones_v := slv_ones(32);
+
+    end loop;
+
+    wait;
+  end process;
+
+
+  p_main: process
+  begin
+    wait for wait_us * 1 us;
+    runsim <= false;
+    wait;
+  end process;
+
+end architecture;
diff --git a/testsuite/gna/issue616/repro.vhdl b/testsuite/gna/issue616/repro.vhdl
new file mode 100644
index 000000000..1632bb056
--- /dev/null
+++ b/testsuite/gna/issue616/repro.vhdl
@@ -0,0 +1,16 @@
+package repro is
+  function return_true return boolean;
+end repro;
+
+package body repro is
+  function slv_ones(constant width : in integer) return bit_vector is
+  begin
+    return (1 to width => '1');
+  end function;
+  
+  function return_true return boolean is
+    constant ones_c : bit_vector(31 downto 0) := slv_ones(32);
+  begin
+    return true;
+  end function;
+end repro;
diff --git a/testsuite/gna/issue616/repro1.vhdl b/testsuite/gna/issue616/repro1.vhdl
new file mode 100644
index 000000000..9df4513ff
--- /dev/null
+++ b/testsuite/gna/issue616/repro1.vhdl
@@ -0,0 +1,16 @@
+package repro1 is
+  function return_true return boolean;
+end repro1;
+
+package body repro1 is
+  function slv_ones(constant width : in integer) return bit_vector is
+  begin
+    return (1 to width => '1');
+  end function;
+  
+  function return_true return boolean is
+    constant ones_c : bit_vector(31 downto 0) := (others => '1');
+  begin
+    return ones_c = slv_ones(32);
+  end function;
+end repro1;
diff --git a/testsuite/gna/issue616/repro2.vhdl b/testsuite/gna/issue616/repro2.vhdl
new file mode 100644
index 000000000..b7060a2cb
--- /dev/null
+++ b/testsuite/gna/issue616/repro2.vhdl
@@ -0,0 +1,18 @@
+package repro2 is
+  procedure return_true (res : out boolean);
+end repro2;
+
+package body repro2 is
+  function slv_ones(constant width : in integer) return bit_vector is
+  begin
+    return (1 to width => '1');
+  end function;
+
+  procedure return_true (res : out boolean) is
+    constant ones_c : bit_vector(31 downto 0) := (others => '1');
+    constant two_c : bit_vector := slv_ones(32);
+  begin
+    wait for 1 ns;
+    res := ones_c = two_c;
+  end;
+end repro2;
diff --git a/testsuite/gna/issue616/testsuite.sh b/testsuite/gna/issue616/testsuite.sh
new file mode 100755
index 000000000..d84196e87
--- /dev/null
+++ b/testsuite/gna/issue616/testsuite.sh
@@ -0,0 +1,14 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+# Not very interesting, need to observe memory usage.
+analyze mwe.vhdl
+elab_simulate mwe
+
+analyze repro.vhdl
+analyze repro1.vhdl
+
+clean
+
+echo "Test successful"