17 files changed, 693 insertions, 0 deletions
diff --git a/testsuite/gna/issue476/pixel_column_pkg.vhd b/testsuite/gna/issue476/pixel_column_pkg.vhd
new file mode 100644
index 000000000..ce14bb5f3
--- /dev/null
+++ b/testsuite/gna/issue476/pixel_column_pkg.vhd
@@ -0,0 +1,69 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+use work.pixel_pkg;
+
+package pixel_column_pkg is
+    generic(
+        NBITS_IN                       : natural;
+        NBR_OF_CHROMA_IN               : natural;
+        NBR_OF_ROW_IN                  : natural;
+        NBITS_OUT                      : natural;
+        NBR_OF_CHROMA_OUT              : natural;
+        NBR_OF_ROW_OUT                 : natural;
+        package local_pixel_pkg is new pixel_pkg
+            generic map (<>)
+    );
+
+    use local_pixel_pkg.all;
+
+    type TYPE_PIXEL_COLUMN_IN is array (NBR_OF_ROW_IN-1 downto 0) of TYPE_PIXEL_IN;
+    type TYPE_PIXEL_COLUMN_OUT is array (NBR_OF_ROW_OUT-1 downto 0) of TYPE_PIXEL_OUT;
+
+    function std_logic_vector_to_pixel_column_in( in_vector : in std_logic_vector(NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
+        return TYPE_PIXEL_COLUMN_IN;
+
+    function pixel_column_out_to_std_logic_vector( out_pixel_column : in TYPE_PIXEL_COLUMN_OUT)
+        return std_logic_vector;
+
+    function "not" (    pixel_column_in          : in TYPE_PIXEL_COLUMN_IN)
+        return TYPE_PIXEL_COLUMN_OUT;
+
+
+end package pixel_column_pkg;
+
+package body pixel_column_pkg is
+
+    function std_logic_vector_to_pixel_column_in( in_vector : in std_logic_vector(NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
+    return TYPE_PIXEL_COLUMN_IN is
+        variable pixel_column_in : TYPE_PIXEL_COLUMN_IN; 
+    begin
+        for row in 0 to NBR_OF_ROW_IN -1 loop
+            pixel_column_in(row) := std_logic_vector_to_pixel_in(in_vector((row+1)*NBR_OF_CHROMA_IN*NBITS_IN-1 downto row*NBR_OF_CHROMA_IN*NBITS_IN));
+        end loop;
+        return pixel_column_in;
+    end function std_logic_vector_to_pixel_column_in;
+
+    function pixel_column_out_to_std_logic_vector( out_pixel_column : in TYPE_PIXEL_COLUMN_OUT)
+    return std_logic_vector is
+        variable out_vector : std_logic_vector(NBR_OF_ROW_OUT*NBR_OF_CHROMA_OUT*NBITS_OUT-1 downto 0);
+    begin
+        for row in 0 to NBR_OF_ROW_OUT loop
+            out_vector((row+1)*NBR_OF_CHROMA_IN*NBITS_IN-1 downto row*NBR_OF_CHROMA_IN*NBITS_IN) := pixel_out_to_std_logic_vector(out_pixel_column(row));
+        end loop;
+        return out_vector;
+    end function pixel_column_out_to_std_logic_vector;
+
+    function "not" (    pixel_column_in        : in TYPE_PIXEL_COLUMN_IN)
+            return TYPE_PIXEL_COLUMN_OUT is
+        variable pixel_column_out : TYPE_PIXEL_COLUMN_OUT;
+    begin
+        for index in pixel_column_in'range loop
+            pixel_column_out(index) := not pixel_column_in(index);
+        end loop;
+        return pixel_column_out;
+    end function "not";
+
+end package body pixel_column_pkg;
+
diff --git a/testsuite/gna/issue476/pixel_matrix_pkg.vhd b/testsuite/gna/issue476/pixel_matrix_pkg.vhd
new file mode 100644
index 000000000..137f62844
--- /dev/null
+++ b/testsuite/gna/issue476/pixel_matrix_pkg.vhd
@@ -0,0 +1,75 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+use work.pixel_column_pkg;
+
+package pixel_matrix_pkg is
+    generic(
+        NBITS_IN                       : natural;
+        NBR_OF_CHROMA_IN               : natural;
+        NBR_OF_ROW_IN                  : natural;
+        NBR_OF_COL_IN                  : natural;
+        NBITS_OUT                      : natural;
+        NBR_OF_CHROMA_OUT              : natural;
+        NBR_OF_ROW_OUT                 : natural;
+        NBR_OF_COL_OUT                 : natural;
+        package local_pixel_column_pkg is new pixel_column_pkg generic map (<>)
+    );
+    use local_pixel_column_pkg.all;
+
+    type TYPE_PIXEL_MATRIX_IN is array (NBR_OF_COL_IN-1 downto 0) of TYPE_PIXEL_COLUMN_IN;
+    type TYPE_PIXEL_MATRIX_OUT is array (NBR_OF_COL_OUT-1 downto 0) of TYPE_PIXEL_COLUMN_OUT;
+
+    -- Note: this pkgs is used to propagate the functions that where defined for a (N x 1) array of pixel 
+    --       to a (N x M) array of pixel
+
+    function std_logic_vector_to_pixel_matrix_in( in_vector : in std_logic_vector(NBR_OF_COL_IN*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
+        return TYPE_PIXEL_MATRIX_IN;
+
+    function pixel_matrix_out_to_std_logic_vector( out_pixel_matrix : in TYPE_PIXEL_MATRIX_OUT)
+        return std_logic_vector;
+
+
+    function "not" (    pixel_matrix_in          : in TYPE_PIXEL_MATRIX_IN)
+        return TYPE_PIXEL_MATRIX_OUT;
+
+
+
+end package pixel_matrix_pkg;
+
+package body pixel_matrix_pkg is
+
+    function std_logic_vector_to_pixel_matrix_in( in_vector : in std_logic_vector(NBR_OF_COL_IN*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
+    return TYPE_PIXEL_MATRIX_IN is
+        variable pixel_matrix_in : TYPE_PIXEL_MATRIX_IN; 
+    begin
+        for col in 0 to NBR_OF_COL_IN-1 loop
+            pixel_matrix_in(col) := std_logic_vector_to_pixel_column_in(in_vector((col+1)*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto col*NBR_OF_ROW_OUT*NBR_OF_CHROMA_IN*NBITS_IN));
+        end loop;
+        return pixel_matrix_in;
+    end function std_logic_vector_to_pixel_matrix_in;
+
+    function pixel_matrix_out_to_std_logic_vector( out_pixel_matrix : in TYPE_PIXEL_MATRIX_OUT)
+    return std_logic_vector is
+        variable out_vector : std_logic_vector(NBR_OF_COL_OUT*NBR_OF_ROW_OUT*NBR_OF_CHROMA_OUT*NBITS_OUT-1 downto 0);
+    begin
+        for col in 0 to NBR_OF_COL_OUT-1 loop
+            out_vector(((col+1)*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN)*NBITS_IN-1 downto col*NBR_OF_ROW_OUT*NBR_OF_CHROMA_IN*NBITS_IN) := pixel_column_out_to_std_logic_vector(out_pixel_matrix(col));
+        end loop;
+        return out_vector;
+    end function pixel_matrix_out_to_std_logic_vector;
+
+    function "not" (    pixel_matrix_in        : in TYPE_PIXEL_MATRIX_IN)
+            return TYPE_PIXEL_MATRIX_OUT is
+        variable pixel_matrix_out : TYPE_PIXEL_MATRIX_OUT;
+    begin
+        for index in 0 to NBR_OF_COL_IN-1 loop
+            pixel_matrix_out(index) := not pixel_matrix_in(index);
+        end loop;
+        return pixel_matrix_out;
+    end function "not";
+
+
+end package body pixel_matrix_pkg;
+
diff --git a/testsuite/gna/issue476/pixel_pkg.vhd b/testsuite/gna/issue476/pixel_pkg.vhd
new file mode 100644
index 000000000..6ae4259f5
--- /dev/null
+++ b/testsuite/gna/issue476/pixel_pkg.vhd
@@ -0,0 +1,69 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+package pixel_pkg is
+    generic(
+        NBITS_IN                       : natural;
+        NBR_OF_CHROMA_IN               : natural;
+        NBITS_OUT                      : natural;
+        NBR_OF_CHROMA_OUT              : natural
+    );
+
+    subtype CHROMA_IN is unsigned(NBITS_IN-1 downto 0);
+    type TYPE_PIXEL_IN is array (NBR_OF_CHROMA_IN-1 downto 0) of CHROMA_IN;
+    
+    subtype CHROMA_OUT is unsigned(NBITS_OUT-1 downto 0);
+    type TYPE_PIXEL_OUT is array (NBR_OF_CHROMA_OUT-1 downto 0) of CHROMA_OUT;
+
+    -- Note: every function is using unsigned vectors for now
+
+    function std_logic_vector_to_pixel_in( in_vector : in std_logic_vector(NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
+        return TYPE_PIXEL_IN;
+
+    function pixel_out_to_std_logic_vector( out_pixel : in TYPE_PIXEL_OUT)
+        return std_logic_vector;
+
+    function "not" (    pixel_in          : in TYPE_PIXEL_IN)
+        return TYPE_PIXEL_OUT;
+
+
+
+
+
+end package pixel_pkg;
+
+package body pixel_pkg is
+
+    function std_logic_vector_to_pixel_in( in_vector : in std_logic_vector(NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0))
+    return TYPE_PIXEL_IN is
+        variable pixel_in : TYPE_PIXEL_IN; 
+    begin
+        for chroma in 0 to NBR_OF_CHROMA_IN -1 loop
+            pixel_in(chroma) := unsigned(in_vector((chroma+1)*NBITS_IN-1 downto chroma*NBITS_IN));
+        end loop;
+        return pixel_in;
+    end function std_logic_vector_to_pixel_in;
+
+    function pixel_out_to_std_logic_vector( out_pixel : in TYPE_PIXEL_OUT)
+    return std_logic_vector is
+        variable out_vector : std_logic_vector(NBR_OF_CHROMA_OUT*NBITS_OUT-1 downto 0);
+    begin
+        for chroma in 0 to NBR_OF_CHROMA_OUT loop
+            out_vector((chroma+1)*NBITS_OUT-1 downto chroma*NBITS_OUT) := std_logic_vector(out_pixel(chroma));
+        end loop;
+        return out_vector;
+    end function pixel_out_to_std_logic_vector;
+
+    function "not" (    pixel_in        : in TYPE_PIXEL_IN)
+            return TYPE_PIXEL_OUT is
+        variable pixel_out : TYPE_PIXEL_OUT;
+    begin
+        for index in pixel_in'range loop
+            pixel_out(index) := not pixel_in(index);
+        end loop;
+        return pixel_out;
+    end function "not";
+
+end package body pixel_pkg;
+
diff --git a/testsuite/gna/issue476/repro/pixel_column_pkg.vhd b/testsuite/gna/issue476/repro/pixel_column_pkg.vhd
new file mode 100644
index 000000000..c9a1d712a
--- /dev/null
+++ b/testsuite/gna/issue476/repro/pixel_column_pkg.vhd
@@ -0,0 +1,38 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+use work.pixel_pkg;
+
+package pixel_column_pkg is
+    generic(
+        NBITS                       : natural;
+        NBR_OF_CHROMA               : natural;
+        NBR_OF_ROW                  : natural;
+        package local_pixel_pkg is new pixel_pkg
+            generic map (<>)
+    );
+
+    use local_pixel_pkg.all;
+
+    type TYPE_PIXEL_COLUMN is array (NBR_OF_ROW-1 downto 0) of TYPE_PIXEL;
+
+    function std_logic_vector_to_pixel_column
+      (in_vector : in std_logic_vector(NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+        return TYPE_PIXEL_COLUMN;
+
+end package pixel_column_pkg;
+
+package body pixel_column_pkg is
+
+    function std_logic_vector_to_pixel_column( in_vector : in std_logic_vector(NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+    return TYPE_PIXEL_COLUMN is
+        variable pixel_column : TYPE_PIXEL_COLUMN; 
+    begin
+        for row in 0 to NBR_OF_ROW - 1 loop
+            pixel_column(row) := std_logic_vector_to_pixel(in_vector((row+1)*NBR_OF_CHROMA*NBITS-1 downto row*NBR_OF_CHROMA*NBITS));
+        end loop;
+        return pixel_column;
+    end function std_logic_vector_to_pixel_column;
+end package body pixel_column_pkg;
+
diff --git a/testsuite/gna/issue476/repro/pixel_matrix_pkg.vhd b/testsuite/gna/issue476/repro/pixel_matrix_pkg.vhd
new file mode 100644
index 000000000..69478a68f
--- /dev/null
+++ b/testsuite/gna/issue476/repro/pixel_matrix_pkg.vhd
@@ -0,0 +1,37 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+use work.pixel_column_pkg;
+
+package pixel_matrix_pkg is
+    generic(
+        NBITS                       : natural;
+        NBR_OF_CHROMA               : natural;
+        NBR_OF_ROW                  : natural;
+        NBR_OF_COL                  : natural;
+        package local_pixel_column_pkg is new pixel_column_pkg generic map (<>)
+    );
+    use local_pixel_column_pkg.all;
+
+    type TYPE_PIXEL_MATRIX is array (NBR_OF_COL-1 downto 0) of TYPE_PIXEL_COLUMN;
+    -- Note: this pkgs is used to propagate the functions that where defined for a (N x 1) array of pixel 
+    --       to a (N x M) array of pixel
+
+    function std_logic_vector_to_pixel_matrix( in_vector : in std_logic_vector(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+        return TYPE_PIXEL_MATRIX;
+end package pixel_matrix_pkg;
+
+package body pixel_matrix_pkg is
+
+    function std_logic_vector_to_pixel_matrix( in_vector : in std_logic_vector(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+    return TYPE_PIXEL_MATRIX is
+        variable pixel_matrix : TYPE_PIXEL_MATRIX; 
+    begin
+        for col in 0 to NBR_OF_COL-1 loop
+            pixel_matrix(col) := std_logic_vector_to_pixel_column(in_vector((col+1)*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto col*NBR_OF_ROW*NBR_OF_CHROMA*NBITS));
+        end loop;
+        return pixel_matrix;
+    end function std_logic_vector_to_pixel_matrix;
+end package body pixel_matrix_pkg;
+
diff --git a/testsuite/gna/issue476/repro/pixel_pkg.vhd b/testsuite/gna/issue476/repro/pixel_pkg.vhd
new file mode 100644
index 000000000..b6e988ad2
--- /dev/null
+++ b/testsuite/gna/issue476/repro/pixel_pkg.vhd
@@ -0,0 +1,32 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+package pixel_pkg is
+    generic(
+        NBITS                       : natural;
+        NBR_OF_CHROMA               : natural
+    );
+
+    subtype CHROMA is unsigned(NBITS-1 downto 0);
+    type TYPE_PIXEL is array (NBR_OF_CHROMA-1 downto 0) of CHROMA;
+
+    function std_logic_vector_to_pixel
+      (in_vector : in std_logic_vector(NBR_OF_CHROMA*NBITS-1 downto 0))
+      return TYPE_PIXEL;
+end package pixel_pkg;
+
+package body pixel_pkg is
+
+  function std_logic_vector_to_pixel
+    ( in_vector : in std_logic_vector(NBR_OF_CHROMA*NBITS-1 downto 0))
+    return TYPE_PIXEL is
+    variable pixel : TYPE_PIXEL;
+  begin
+    for chroma in 0 to NBR_OF_CHROMA -1 loop
+      pixel(chroma) := unsigned(in_vector((chroma+1)*NBITS-1 downto chroma*NBITS));
+    end loop;
+    return pixel;
+  end function std_logic_vector_to_pixel;
+end package body pixel_pkg;
+
diff --git a/testsuite/gna/issue476/repro/test_op.vhd b/testsuite/gna/issue476/repro/test_op.vhd
new file mode 100644
index 000000000..ae1def6b7
--- /dev/null
+++ b/testsuite/gna/issue476/repro/test_op.vhd
@@ -0,0 +1,48 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity test_op is
+    generic (
+        NBITS                       : natural := 1;
+        NBR_OF_CHROMA               : natural := 1;
+        NBR_OF_ROW                  : natural := 1;
+        NBR_OF_COL                  : natural := 1;
+        NBR_OF_MATRIX               : natural := 1);
+    port (
+        signal clock, rst             : in  std_logic;
+        signal in_data                : in  std_logic_vector(NBR_OF_MATRIX*NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end entity test_op;
+
+architecture rtl of test_op is
+
+    package local_pixel_pkg is new work.pixel_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA
+      );
+
+    package local_pixel_column_pkg is new work.pixel_column_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA,
+            NBR_OF_ROW                  => NBR_OF_ROW,
+            local_pixel_pkg                => local_pixel_pkg
+      );
+
+    package local_pixel_matrix_pkg is new work.pixel_matrix_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA,
+            NBR_OF_ROW                  => NBR_OF_ROW,
+            NBR_OF_COL                  => NBR_OF_COL,
+            local_pixel_column_pkg         => local_pixel_column_pkg
+      );
+
+    use local_pixel_matrix_pkg.all;
+    signal input_pixel_matrix : TYPE_PIXEL_MATRIX;
+begin
+
+    -- As soon as a function from the local_pixel_matrix_pkg is used it breaks
+    input_pixel_matrix <= std_logic_vector_to_pixel_matrix(in_data(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end architecture rtl;
diff --git a/testsuite/gna/issue476/repro/test_op1.vhd b/testsuite/gna/issue476/repro/test_op1.vhd
new file mode 100644
index 000000000..b5416f704
--- /dev/null
+++ b/testsuite/gna/issue476/repro/test_op1.vhd
@@ -0,0 +1,39 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity test_op1 is
+    generic (
+        NBITS                       : natural := 1;
+        NBR_OF_CHROMA               : natural := 1;
+        NBR_OF_ROW                  : natural := 1;
+        NBR_OF_COL                  : natural := 1;
+        NBR_OF_MATRIX               : natural := 1);
+    port (
+        signal clock, rst             : in  std_logic;
+        signal in_data                : in  std_logic_vector(NBR_OF_MATRIX*NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end entity test_op1;
+
+architecture rtl of test_op1 is
+
+    package local_pixel_pkg is new work.pixel_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA
+      );
+
+    package local_pixel_column_pkg is new work.pixel_column_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA,
+            NBR_OF_ROW                  => NBR_OF_ROW,
+            local_pixel_pkg                => local_pixel_pkg
+      );
+
+    use local_pixel_column_pkg.all;
+    signal input_pixel_column : TYPE_PIXEL_COLUMN;
+begin
+
+    -- As soon as a function from the local_pixel_matrix_pkg is used it breaks
+    input_pixel_column <= std_logic_vector_to_pixel_column(in_data(NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end architecture rtl;
diff --git a/testsuite/gna/issue476/repro/testsuite.sh b/testsuite/gna/issue476/repro/testsuite.sh
new file mode 100755
index 000000000..69c5cbd16
--- /dev/null
+++ b/testsuite/gna/issue476/repro/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../../testenv.sh
+
+export GHDL_STD_FLAGS=--std=08
+analyze pixel_pkg.vhd pixel_column_pkg.vhd pixel_matrix_pkg.vhd test_op1.vhd
+elab_simulate test_op1
+
+clean
+
+echo "Test successful"
diff --git a/testsuite/gna/issue476/repro2/pixel_column_pkg.vhd b/testsuite/gna/issue476/repro2/pixel_column_pkg.vhd
new file mode 100644
index 000000000..6583b6239
--- /dev/null
+++ b/testsuite/gna/issue476/repro2/pixel_column_pkg.vhd
@@ -0,0 +1,34 @@
+use work.pixel_pkg;
+
+package pixel_column_pkg is
+    generic(
+        NBITS                       : natural;
+        NBR_OF_CHROMA               : natural;
+        NBR_OF_ROW                  : natural;
+        package local_pixel_pkg is new pixel_pkg
+            generic map (<>)
+    );
+
+    use local_pixel_pkg.all;
+
+    type TYPE_PIXEL_COLUMN is array (NBR_OF_ROW-1 downto 0) of TYPE_PIXEL;
+
+    function bit_vector_to_pixel_column
+      (in_vector : in bit_vector(NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+        return TYPE_PIXEL_COLUMN;
+
+end package pixel_column_pkg;
+
+package body pixel_column_pkg is
+
+    function bit_vector_to_pixel_column( in_vector : in bit_vector(NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+    return TYPE_PIXEL_COLUMN is
+        variable pixel_column : TYPE_PIXEL_COLUMN; 
+    begin
+        for row in 0 to NBR_OF_ROW-1 loop
+            pixel_column(row) := bit_vector_to_pixel(in_vector((row+1)*NBR_OF_CHROMA*NBITS-1 downto row*NBR_OF_CHROMA*NBITS));
+        end loop;
+        return pixel_column;
+    end function bit_vector_to_pixel_column;
+end package body pixel_column_pkg;
+
diff --git a/testsuite/gna/issue476/repro2/pixel_matrix_pkg.vhd b/testsuite/gna/issue476/repro2/pixel_matrix_pkg.vhd
new file mode 100644
index 000000000..69478a68f
--- /dev/null
+++ b/testsuite/gna/issue476/repro2/pixel_matrix_pkg.vhd
@@ -0,0 +1,37 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+use work.pixel_column_pkg;
+
+package pixel_matrix_pkg is
+    generic(
+        NBITS                       : natural;
+        NBR_OF_CHROMA               : natural;
+        NBR_OF_ROW                  : natural;
+        NBR_OF_COL                  : natural;
+        package local_pixel_column_pkg is new pixel_column_pkg generic map (<>)
+    );
+    use local_pixel_column_pkg.all;
+
+    type TYPE_PIXEL_MATRIX is array (NBR_OF_COL-1 downto 0) of TYPE_PIXEL_COLUMN;
+    -- Note: this pkgs is used to propagate the functions that where defined for a (N x 1) array of pixel 
+    --       to a (N x M) array of pixel
+
+    function std_logic_vector_to_pixel_matrix( in_vector : in std_logic_vector(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+        return TYPE_PIXEL_MATRIX;
+end package pixel_matrix_pkg;
+
+package body pixel_matrix_pkg is
+
+    function std_logic_vector_to_pixel_matrix( in_vector : in std_logic_vector(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0))
+    return TYPE_PIXEL_MATRIX is
+        variable pixel_matrix : TYPE_PIXEL_MATRIX; 
+    begin
+        for col in 0 to NBR_OF_COL-1 loop
+            pixel_matrix(col) := std_logic_vector_to_pixel_column(in_vector((col+1)*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto col*NBR_OF_ROW*NBR_OF_CHROMA*NBITS));
+        end loop;
+        return pixel_matrix;
+    end function std_logic_vector_to_pixel_matrix;
+end package body pixel_matrix_pkg;
+
diff --git a/testsuite/gna/issue476/repro2/pixel_pkg.vhd b/testsuite/gna/issue476/repro2/pixel_pkg.vhd
new file mode 100644
index 000000000..a00f6f519
--- /dev/null
+++ b/testsuite/gna/issue476/repro2/pixel_pkg.vhd
@@ -0,0 +1,28 @@
+package pixel_pkg is
+    generic(
+        NBITS                       : natural;
+        NBR_OF_CHROMA               : natural
+    );
+
+    subtype CHROMA is bit_vector(NBITS-1 downto 0);
+    type TYPE_PIXEL is array (NBR_OF_CHROMA-1 downto 0) of CHROMA;
+
+    function bit_vector_to_pixel
+      (in_vector : in bit_vector(NBR_OF_CHROMA*NBITS-1 downto 0))
+      return TYPE_PIXEL;
+end package pixel_pkg;
+
+package body pixel_pkg is
+
+  function bit_vector_to_pixel
+    ( in_vector : in bit_vector(NBR_OF_CHROMA*NBITS-1 downto 0))
+    return TYPE_PIXEL is
+    variable pixel : TYPE_PIXEL;
+  begin
+    for chroma in 0 to NBR_OF_CHROMA -1 loop
+      pixel(chroma) := in_vector((chroma+1)*NBITS-1 downto chroma*NBITS);
+    end loop;
+    return pixel;
+  end function bit_vector_to_pixel;
+end package body pixel_pkg;
+
diff --git a/testsuite/gna/issue476/repro2/test_op.vhd b/testsuite/gna/issue476/repro2/test_op.vhd
new file mode 100644
index 000000000..ae1def6b7
--- /dev/null
+++ b/testsuite/gna/issue476/repro2/test_op.vhd
@@ -0,0 +1,48 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity test_op is
+    generic (
+        NBITS                       : natural := 1;
+        NBR_OF_CHROMA               : natural := 1;
+        NBR_OF_ROW                  : natural := 1;
+        NBR_OF_COL                  : natural := 1;
+        NBR_OF_MATRIX               : natural := 1);
+    port (
+        signal clock, rst             : in  std_logic;
+        signal in_data                : in  std_logic_vector(NBR_OF_MATRIX*NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end entity test_op;
+
+architecture rtl of test_op is
+
+    package local_pixel_pkg is new work.pixel_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA
+      );
+
+    package local_pixel_column_pkg is new work.pixel_column_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA,
+            NBR_OF_ROW                  => NBR_OF_ROW,
+            local_pixel_pkg                => local_pixel_pkg
+      );
+
+    package local_pixel_matrix_pkg is new work.pixel_matrix_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA,
+            NBR_OF_ROW                  => NBR_OF_ROW,
+            NBR_OF_COL                  => NBR_OF_COL,
+            local_pixel_column_pkg         => local_pixel_column_pkg
+      );
+
+    use local_pixel_matrix_pkg.all;
+    signal input_pixel_matrix : TYPE_PIXEL_MATRIX;
+begin
+
+    -- As soon as a function from the local_pixel_matrix_pkg is used it breaks
+    input_pixel_matrix <= std_logic_vector_to_pixel_matrix(in_data(NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end architecture rtl;
diff --git a/testsuite/gna/issue476/repro2/test_op1.vhd b/testsuite/gna/issue476/repro2/test_op1.vhd
new file mode 100644
index 000000000..def987f76
--- /dev/null
+++ b/testsuite/gna/issue476/repro2/test_op1.vhd
@@ -0,0 +1,35 @@
+entity test_op1 is
+    generic (
+        NBITS                       : natural := 1;
+        NBR_OF_CHROMA               : natural := 1;
+        NBR_OF_ROW                  : natural := 1;
+        NBR_OF_COL                  : natural := 1;
+        NBR_OF_MATRIX               : natural := 1);
+    port (
+        signal clock, rst             : in  bit;
+        signal in_data                : in  bit_vector(NBR_OF_MATRIX*NBR_OF_COL*NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end entity test_op1;
+
+architecture rtl of test_op1 is
+
+    package inst_pixel_pkg is new work.pixel_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA
+      );
+
+    package inst_pixel_column_pkg is new work.pixel_column_pkg
+      generic map (
+            NBITS                       => NBITS,
+            NBR_OF_CHROMA               => NBR_OF_CHROMA,
+            NBR_OF_ROW                  => NBR_OF_ROW,
+            local_pixel_pkg             => inst_pixel_pkg
+      );
+
+    use inst_pixel_column_pkg.all;
+    signal input_pixel_column : TYPE_PIXEL_COLUMN;
+begin
+
+    -- As soon as a function from the local_pixel_matrix_pkg is used it breaks
+    input_pixel_column <= bit_vector_to_pixel_column(in_data(NBR_OF_ROW*NBR_OF_CHROMA*NBITS-1 downto 0));
+end architecture rtl;
diff --git a/testsuite/gna/issue476/repro2/testsuite.sh b/testsuite/gna/issue476/repro2/testsuite.sh
new file mode 100755
index 000000000..cb988307e
--- /dev/null
+++ b/testsuite/gna/issue476/repro2/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../../testenv.sh
+
+export GHDL_STD_FLAGS=--std=08
+analyze pixel_pkg.vhd pixel_column_pkg.vhd test_op1.vhd
+elab_simulate test_op1
+
+clean
+
+echo "Test successful"
diff --git a/testsuite/gna/issue476/test_op.vhd b/testsuite/gna/issue476/test_op.vhd
new file mode 100644
index 000000000..06cd15d11
--- /dev/null
+++ b/testsuite/gna/issue476/test_op.vhd
@@ -0,0 +1,71 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity test_op is
+    generic (
+        NBITS_IN                       : natural := 1;
+        NBR_OF_CHROMA_IN               : natural := 1;
+        NBR_OF_ROW_IN                  : natural := 1;
+        NBR_OF_COL_IN                  : natural := 1;
+        NBITS_OUT                      : natural := 2;
+        NBR_OF_CHROMA_OUT              : natural := 1;
+        NBR_OF_ROW_OUT                 : natural := 1;
+        NBR_OF_COL_OUT                 : natural := 1;
+        NBR_OF_MATRIX_IN               : natural := 1;
+        NBR_OF_MATRIX_OUT              : natural := 1);
+    port (
+        signal clock, rst             : in  std_logic;
+        signal in_data                : in  std_logic_vector(NBR_OF_MATRIX_IN*NBR_OF_COL_IN*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0);
+        signal out_data               : out std_logic_vector(NBR_OF_MATRIX_OUT*NBR_OF_COL_OUT*NBR_OF_ROW_OUT*NBR_OF_CHROMA_OUT*NBITS_OUT-1 downto 0));
+end entity test_op;
+
+architecture rtl of test_op is
+
+    package local_pixel_pkg is new work.pixel_pkg
+      generic map (
+            NBITS_IN                       => NBITS_IN,
+            NBR_OF_CHROMA_IN               => NBR_OF_CHROMA_IN,
+            NBITS_OUT                      => NBITS_OUT,
+            NBR_OF_CHROMA_OUT              => NBR_OF_CHROMA_OUT
+      );
+
+    package local_pixel_column_pkg is new work.pixel_column_pkg
+      generic map (
+            NBITS_IN                       => NBITS_IN,
+            NBR_OF_CHROMA_IN               => NBR_OF_CHROMA_IN,
+            NBR_OF_ROW_IN                  => NBR_OF_ROW_IN,
+            NBITS_OUT                      => NBITS_OUT,
+            NBR_OF_CHROMA_OUT              => NBR_OF_CHROMA_OUT,
+            NBR_OF_ROW_OUT                 => NBR_OF_ROW_OUT,
+            local_pixel_pkg                => local_pixel_pkg
+      );
+
+    package local_pixel_matrix_pkg is new work.pixel_matrix_pkg
+      generic map (
+            NBITS_IN                       => NBITS_IN,
+            NBR_OF_CHROMA_IN               => NBR_OF_CHROMA_IN,
+            NBR_OF_ROW_IN                  => NBR_OF_ROW_IN,
+            NBR_OF_COL_IN                  => NBR_OF_COL_IN,
+            NBITS_OUT                      => NBITS_OUT,
+            NBR_OF_CHROMA_OUT              => NBR_OF_CHROMA_OUT,
+            NBR_OF_ROW_OUT                 => NBR_OF_ROW_OUT,
+            NBR_OF_COL_OUT                 => NBR_OF_COL_OUT,
+            local_pixel_column_pkg         => local_pixel_column_pkg
+      );
+
+    use local_pixel_matrix_pkg.all;
+    signal input_pixel_matrix : TYPE_PIXEL_MATRIX_IN;
+    signal output_pixel_matrix : TYPE_PIXEL_MATRIX_OUT;
+begin
+
+    -- As soon as a function from the local_pixel_matrix_pkg is used it breaks
+    input_pixel_matrix <= std_logic_vector_to_pixel_matrix_in(in_data(NBR_OF_COL_IN*NBR_OF_ROW_IN*NBR_OF_CHROMA_IN*NBITS_IN-1 downto 0));
+
+    -- Note: Commented out more complex operation to show that the error is generated regardless
+    --       Uncomment to have more "complete" code
+    --output_pixel_matrix <= not input_pixel_matrix;
+    out_data <= (others => '0'); --pixel_matrix_out_to_std_logic_vector(output_pixel_matrix);
+    --out_data <= in_data(NBR_OF_MATRIX_OUT*NBR_OF_COL_OUT*NBR_OF_ROW_OUT*NBR_OF_CHROMA_OUT*NBITS_OUT-1 downto 0);
+
+end architecture rtl;
diff --git a/testsuite/gna/issue476/testsuite.sh b/testsuite/gna/issue476/testsuite.sh
new file mode 100755
index 000000000..5c372de19
--- /dev/null
+++ b/testsuite/gna/issue476/testsuite.sh
@@ -0,0 +1,11 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+export GHDL_STD_FLAGS=--std=08
+analyze pixel_pkg.vhd pixel_column_pkg.vhd pixel_matrix_pkg.vhd test_op.vhd
+elab_simulate test_op
+
+clean
+
+echo "Test successful"