tracebak.c: Always set LOWEST_ADDR to 0 on Win32 (as done on all other x86 platforms).

2004-10-04  Pascal Obry  <obry@gnat.com>

	* tracebak.c: Always set LOWEST_ADDR to 0 on Win32 (as done on all
	other x86 platforms).

From-SVN: r88510

gcc/ada/ChangeLog

+2004-10-04  Pascal Obry  <obry@gnat.com>
+
+	* tracebak.c: Always set LOWEST_ADDR to 0 on Win32 (as done on all
+	other x86 platforms).
+
 2004-10-04  Olivier Hainque  <hainque@act-europe.fr>
 
 	* s-tassta.adb (Task_Wrapper): Make it Convention C, which makes sense

gcc/ada/tracebak.c

@@ -286,15 +286,7 @@ struct layout
   void *return_address;
 };
 
-#ifdef _WIN32
-/* _image_base__ is the image starting address, no stack addresses should be
-   under this value */
-extern unsigned int _image_base__;
-#define LOWEST_ADDR ((unsigned int) (&_image_base__))
-#else
 #define LOWEST_ADDR 0
-#endif
-
 #define FRAME_LEVEL 0
 #define FRAME_OFFSET 0
 #define PC_ADJUST -2