2 files changed, 13 insertions, 26 deletions

diff --git a/src/grt/grt-vstrings.adb b/src/grt/grt-vstrings.adb
index 818701fa0..fe1dc8040 100644
--- a/src/grt/grt-vstrings.adb
+++ b/src/grt/grt-vstrings.adb
@@ -24,22 +24,12 @@
 --  covered by the GNU Public License.
 
 with Grt.Errors; use Grt.Errors;
+with Grt.C; use Grt.C;
 
 package body Grt.Vstrings is
-   procedure Free (Fs : Fat_String_Acc);
-   pragma Import (C, Free);
-
-   function Malloc (Len : Natural) return Fat_String_Acc;
-   pragma Import (C, Malloc);
-
-   function Realloc (Ptr : Fat_String_Acc; Len : Natural)
-                    return Fat_String_Acc;
-   pragma Import (C, Realloc);
-
-
    procedure Free (Vstr : in out Vstring) is
    begin
-      Free (Vstr.Str);
+      Free (To_Address (Vstr.Str));
       Vstr := (Str => null,
                Max => 0,
                Len => 0);
@@ -67,7 +57,8 @@ package body Grt.Vstrings is
       while Nmax < Nlen loop
          Nmax := Nmax * 2;
       end loop;
-      Vstr.Str := Realloc (Vstr.Str, Nmax);
+      Vstr.Str := To_Ghdl_C_String
+        (Realloc (To_Address (Vstr.Str), size_t (Nmax)));
       if Vstr.Str = null then
          Internal_Error ("grt.vstrings.grow: memory exhausted");
       end if;
@@ -113,17 +104,17 @@ package body Grt.Vstrings is
 
    function Get_Address (Vstr : Vstring) return Address is
    begin
-      return Vstr.Str.all'Address;
+      return To_Address (Vstr.Str);
    end Get_Address;
 
    function Get_C_String (Vstr : Vstring) return Ghdl_C_String is
    begin
-      return To_Ghdl_C_String (Vstr.Str.all'Address);
+      return Vstr.Str;
    end Get_C_String;
 
    procedure Free (Rstr : in out Rstring) is
    begin
-      Free (Rstr.Str);
+      Free (To_Address (Rstr.Str));
       Rstr := (Str => null,
                Max => 0,
                First => 0);
@@ -138,7 +129,7 @@ package body Grt.Vstrings is
    is
       Len : constant Natural := Length (Rstr);
       Nlen : constant Natural := Len + Min;
-      Nstr : Fat_String_Acc;
+      Nstr : Ghdl_C_String;
       Nfirst : Natural;
       Nmax : Natural;
    begin
@@ -153,11 +144,11 @@ package body Grt.Vstrings is
       while Nmax < Nlen loop
          Nmax := Nmax * 2;
       end loop;
-      Nstr := Malloc (Nmax);
+      Nstr := To_Ghdl_C_String (Malloc (size_t (Nmax)));
       Nfirst := Nmax + 1 - Len;
       if Rstr.Str /= null then
          Nstr (Nfirst .. Nmax) := Rstr.Str (Rstr.First .. Rstr.Max);
-         Free (Rstr.Str);
+         Free (To_Address (Rstr.Str));
       end if;
       Rstr := (Str => Nstr,
                Max => Nmax,
@@ -189,8 +180,7 @@ package body Grt.Vstrings is
       Rstr.Str (Rstr.First .. Rstr.First + L - 1) := Str (1 .. L);
    end Prepend;
 
-   function Get_Address (Rstr : Rstring) return Address
-   is
+   function Get_Address (Rstr : Rstring) return Address is
    begin
       return Rstr.Str (Rstr.First)'Address;
    end Get_Address;
diff --git a/src/grt/grt-vstrings.ads b/src/grt/grt-vstrings.ads
index 02d0504db..375f294a6 100644
--- a/src/grt/grt-vstrings.ads
+++ b/src/grt/grt-vstrings.ads
@@ -81,18 +81,15 @@ package Grt.Vstrings is
    procedure Copy (Rstr : Rstring; Str : in out String; Len : out Natural);
 
 private
-   subtype Fat_String is String (Positive);
-   type Fat_String_Acc is access Fat_String;
-
    type Vstring is record
-      Str : Fat_String_Acc := null;
+      Str : Ghdl_C_String := null;
       Max : Natural := 0;
       Len : Natural := 0;
    end record;
 
    type Rstring is record
       --  String whose bounds is (1 .. Max).
-      Str : Fat_String_Acc := null;
+      Str : Ghdl_C_String := null;
 
       --  Last index in STR.
       Max : Natural := 0;