adaint.h, adaint.c (__gnat_file_length): Returns an __int64.

2014-08-01  Pascal Obry  <obry@adacore.com>

	* adaint.h, adaint.c (__gnat_file_length): Returns an __int64.
	(__gnat_named_file_length): Likewise.
	(__gnat_file_length_attr): Likewise.
	* a-direct.adb (C_Size): Use size_t as returned type.
	* osint.adb (File_Length): Adjust spec for Internal routine
	(returns size_t).
	* s-os_lib.adb (File_Length): Now returns a CRTL.size_t.
	(System.CRTL): With claused moved to spec.
	* s-os_lib.ads (System.CRTL): With clause moved to here.

From-SVN: r213412

gcc/ada/ChangeLog

 2014-08-01  Pascal Obry  <obry@adacore.com>
 
+	* adaint.h, adaint.c (__gnat_file_length): Returns an __int64.
+	(__gnat_named_file_length): Likewise.
+	(__gnat_file_length_attr): Likewise.
+	* a-direct.adb (C_Size): Use size_t as returned type.
+	* osint.adb (File_Length): Adjust spec for Internal routine
+	(returns size_t).
+	* s-os_lib.adb (File_Length): Now returns a CRTL.size_t.
+	(System.CRTL): With claused moved to spec.
+	* s-os_lib.ads (System.CRTL): With clause moved to here.
+
+2014-08-01  Pascal Obry  <obry@adacore.com>
+
 	* adaint.h, adaint.c (__gnat_open): Added.
 	* s-crtl.ads (open): Import __gnat_open for large file support.
 

gcc/ada/a-direct.adb

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 2004-2013, Free Software Foundation, Inc.         --
+--          Copyright (C) 2004-2014, Free Software Foundation, Inc.         --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -1250,7 +1250,7 @@ package body Ada.Directories is
    function Size (Name : String) return File_Size is
       C_Name : String (1 .. Name'Length + 1);
 
-      function C_Size (Name : Address) return Long_Integer;
+      function C_Size (Name : Address) return size_t;
       pragma Import (C, C_Size, "__gnat_named_file_length");
 
    begin

gcc/ada/adaint.c

@@ -1308,7 +1308,7 @@ __gnat_stat_to_attr (int fd, char* name, struct file_attributes* attr)
  ** Return the number of bytes in the specified file
  ****************************************************************/
 
-long
+__int64
 __gnat_file_length_attr (int fd, char* name, struct file_attributes* attr)
 {
   if (attr->file_length == -1) {
@@ -1318,7 +1318,7 @@ __gnat_file_length_attr (int fd, char* name, struct file_attributes* attr)
   return attr->file_length;
 }
 
-long
+__int64
 __gnat_file_length (int fd)
 {
   struct file_attributes attr;
@@ -1326,7 +1326,7 @@ __gnat_file_length (int fd)
   return __gnat_file_length_attr (fd, NULL, &attr);
 }
 
-long
+__int64
 __gnat_named_file_length (char *name)
 {
   struct file_attributes attr;

gcc/ada/adaint.h

@@ -98,7 +98,7 @@ struct file_attributes {
   unsigned char directory;
 
   OS_Time timestamp;
-  long file_length;
+  __int64 file_length;
 };
 /* WARNING: changing the size here might require changing the constant
  * File_Attributes_Size in osint.ads (which should be big enough to
@@ -151,8 +151,8 @@ extern int    __gnat_create_output_file            (char *);
 extern int    __gnat_create_output_file_new        (char *);
 
 extern int    __gnat_open_append                   (char *, int);
-extern long   __gnat_file_length                   (int);
-extern long   __gnat_named_file_length             (char *);
+extern __int64 __gnat_file_length                  (int);
+extern __int64 __gnat_named_file_length            (char *);
 extern void   __gnat_tmp_name			   (char *);
 extern DIR   *__gnat_opendir                       (char *);
 extern char  *__gnat_readdir                       (DIR *, char *, int *);
@@ -177,7 +177,7 @@ extern int    __gnat_is_executable_file      (char *name);
 
 extern void   __gnat_reset_attributes (struct file_attributes *);
 extern int    __gnat_error_attributes (struct file_attributes *);
-extern long   __gnat_file_length_attr        (int, char *, struct file_attributes *);
+extern __int64 __gnat_file_length_attr       (int, char *, struct file_attributes *);
 extern OS_Time __gnat_file_time_name_attr    (char *, struct file_attributes *);
 extern OS_Time __gnat_file_time_fd_attr      (int,    struct file_attributes *);
 extern int    __gnat_file_exists_attr        (char *, struct file_attributes *);

gcc/ada/osint.adb

@@ -1076,10 +1076,13 @@ package body Osint is
       function Internal
         (F : Integer;
          N : C_File_Name;
-         A : System.Address) return Long_Integer;
+         A : System.Address) return size_t;
       pragma Import (C, Internal, "__gnat_file_length_attr");
    begin
-      return Internal (-1, Name, Attr.all'Address);
+      --  The conversion from size_t to Long_Integer is ok here as this
+      --  routine is only to be used by the compiler and we do not expect
+      --  a unit to be larger than a 32bit integer.
+      return Long_Integer (Internal (-1, Name, Attr.all'Address));
    end File_Length;
 
    ---------------------

gcc/ada/s-os_lib.adb

@@ -35,7 +35,6 @@ with Ada.Unchecked_Conversion;
 with Ada.Unchecked_Deallocation;
 with System; use System;
 with System.Case_Util;
-with System.CRTL;
 with System.Soft_Links;
 
 package body System.OS_Lib is

gcc/ada/s-os_lib.ads

@@ -56,6 +56,8 @@ pragma Compiler_Unit_Warning;
 with System;
 with System.Strings;
 
+with System.CRTL;
+
 package System.OS_Lib is
    pragma Preelaborate;
 
@@ -432,7 +434,7 @@ package System.OS_Lib is
    --  to the current position (origin = SEEK_CUR), end of file (origin =
    --  SEEK_END), or start of file (origin = SEEK_SET).
 
-   function File_Length (FD : File_Descriptor) return Long_Integer;
+   function File_Length (FD : File_Descriptor) return CRTL.size_t;
    pragma Import (C, File_Length, "__gnat_file_length");
    --  Get length of file from file descriptor FD