5 files changed, 134 insertions, 0 deletions
diff --git a/testsuite/synth/issue1004/firmware.hex b/testsuite/synth/issue1004/firmware.hex
new file mode 100644
index 000000000..b0402f3cb
--- /dev/null
+++ b/testsuite/synth/issue1004/firmware.hex
@@ -0,0 +1,3 @@
+0102030405060708
+1112131415161718
+2122232425262728
diff --git a/testsuite/synth/issue1004/tb_test2.vhdl b/testsuite/synth/issue1004/tb_test2.vhdl
new file mode 100644
index 000000000..d13513f97
--- /dev/null
+++ b/testsuite/synth/issue1004/tb_test2.vhdl
@@ -0,0 +1,34 @@
+entity tb_test2 is
+end tb_test2;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_test2 is
+  signal addr : std_logic_vector(1 downto 0);
+  signal data : std_logic_vector(63 downto 0);
+begin
+  dut: entity work.test2
+    port map (addr, data);
+
+  process
+  begin
+    addr <= b"00";
+    wait for 1 ns;
+    assert data = x"0102030405060708" severity failure;
+
+    addr <= b"01";
+    wait for 1 ns;
+    assert data = x"1112131415161718" severity failure;
+
+    addr <= b"10";
+    wait for 1 ns;
+    assert data = x"2122232425262728" severity failure;
+
+    addr <= b"11";
+    wait for 1 ns;
+    assert data = x"0000000000000000" severity failure;
+
+    wait;
+  end process;
+end behav;
diff --git a/testsuite/synth/issue1004/test.vhdl b/testsuite/synth/issue1004/test.vhdl
new file mode 100644
index 000000000..bbbbde499
--- /dev/null
+++ b/testsuite/synth/issue1004/test.vhdl
@@ -0,0 +1,35 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+use std.textio.all;
+
+entity test is
+    generic(
+        MEMORY_SIZE   : natural := 4096;
+        RAM_INIT_FILE : string := "firmware.hex"
+        );
+end entity test;
+
+architecture behaviour of test is
+    type ram_t is array(0 to (MEMORY_SIZE / 8) - 1) of std_logic_vector(63 downto 0);
+
+    impure function init_ram(name : STRING) return ram_t is
+        file ram_file : text open read_mode is name;
+        variable ram_line : line;
+        variable temp_word : std_logic_vector(63 downto 0);
+        variable temp_ram : ram_t := (others => (others => '0'));
+    begin
+        for i in 0 to (MEMORY_SIZE/8)-1 loop
+            exit when endfile(ram_file);
+            readline(ram_file, ram_line);
+            report "read: " & ram_line.all;
+            hread(ram_line, temp_word);
+            temp_ram(i) := temp_word;
+        end loop;
+
+        return temp_ram;
+    end function;
+
+    signal memory : ram_t := init_ram(RAM_INIT_FILE);
+begin
+end architecture behaviour;
diff --git a/testsuite/synth/issue1004/test2.vhdl b/testsuite/synth/issue1004/test2.vhdl
new file mode 100644
index 000000000..aab224908
--- /dev/null
+++ b/testsuite/synth/issue1004/test2.vhdl
@@ -0,0 +1,38 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+use std.textio.all;
+
+entity test2 is
+    generic(
+        MEMORY_SIZE   : natural := 32;
+        RAM_INIT_FILE : string := "firmware.hex"
+        );
+    port (addr : std_logic_vector (1 downto 0);
+          data : out std_logic_vector (63 downto 0));
+end entity test2;
+
+architecture behaviour of test2 is
+    type ram_t is array(0 to (MEMORY_SIZE / 8) - 1) of std_logic_vector(63 downto 0);
+
+    impure function init_ram(name : STRING) return ram_t is
+        file ram_file : text open read_mode is name;
+        variable ram_line : line;
+        variable temp_word : std_logic_vector(63 downto 0);
+        variable temp_ram : ram_t := (others => (others => '0'));
+    begin
+        for i in 0 to (MEMORY_SIZE/8)-1 loop
+            exit when endfile(ram_file);
+            readline(ram_file, ram_line);
+            report "read: " & ram_line.all;
+            hread(ram_line, temp_word);
+            temp_ram(i) := temp_word;
+        end loop;
+
+        return temp_ram;
+    end function;
+
+    signal memory : ram_t := init_ram(RAM_INIT_FILE);
+begin
+  data <= memory (to_integer (unsigned (addr)));
+end architecture behaviour;
diff --git a/testsuite/synth/issue1004/testsuite.sh b/testsuite/synth/issue1004/testsuite.sh
new file mode 100755
index 000000000..fa3686042
--- /dev/null
+++ b/testsuite/synth/issue1004/testsuite.sh
@@ -0,0 +1,24 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+GHDL_STD_FLAGS=--std=08
+for t in test; do
+  synth $t.vhdl -e $t > syn_$t.vhdl
+  analyze syn_$t.vhdl
+done
+
+for t in test2; do
+    analyze $t.vhdl tb_$t.vhdl
+    elab_simulate tb_$t
+    clean
+
+    synth $t.vhdl -e $t > syn_$t.vhdl
+    analyze syn_$t.vhdl tb_$t.vhdl
+    elab_simulate tb_$t --ieee-asserts=disable-at-0
+    clean
+done
+
+clean
+
+echo "Test successful"