[Ada] Patch to fix ada/9961 (bootstrap failure)

[Geert Bosch <bosch at darwin dot gnat dot com>]

Bootstrapped on i686-pc-linux-gnu on both mainline and branch, 
where the build log does not show the warning anymore.

Applied to 3.3 branch and head.

2003-03-05  Olivier Hainque  <hainque at gnat dot com>

	ada/9961
        * raise.c : (__gnat_Unwind_RaiseException): Add prototype to avoid
        warning, and fix return type for the IN_RTS && !SJLJ case.

Index: raise.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/ada/raise.c,v
retrieving revision 1.6
diff -u -p -r1.6 raise.c
--- raise.c	4 Mar 2003 20:14:59 -0000	1.6
+++ raise.c	5 Mar 2003 16:01:41 -0000
@@ -88,10 +88,20 @@ __gnat_unhandled_terminate ()
 }
 
 /* Below is the code related to the integration of the GCC mechanism for
-   exception handling.  */
+   exception handling. Still work in progress. */
 
 #include "unwind.h"
 
+/* If the underlying GCC scheme for exception handling is SJLJ, the standard
+   propagation routine (_Unwind_RaiseException) is actually renamed using a
+   #define directive (see unwing-sjlj.c). We need a consistently named
+   interface to import from a-except, so stubs are defined here, at the end
+   of this file.  */
+
+_Unwind_Reason_Code
+__gnat_Unwind_RaiseException PARAMS ((struct _Unwind_Exception *));
+
+
 /* Exception Handling personality routine for Ada.
 
    ??? It is currently inspired from the one for C++, needs cleanups and
@@ -597,10 +607,7 @@ __gnat_eh_personality (version, actions,
 }
 
 
-/* If the underlying GCC scheme for exception handling is SJLJ, the standard
-   propagation routine (_Unwind_RaiseException) is actually renamed using a
-   #define directive (see unwing-sjlj.c). We need a consistently named
-   interface to import from a-except, so stubs are defined here.  */
+/* Stubs for the libgcc unwinding interface, to be imported by a-except.  */ 
 
 #ifdef __USING_SJLJ_EXCEPTIONS__
 
@@ -614,7 +621,7 @@ __gnat_Unwind_RaiseException (e)
 #else
 /* __USING_SJLJ_EXCEPTIONS__ not defined */
 
-void
+_Unwind_Reason_Code
 __gnat_Unwind_RaiseException (e)
      struct _Unwind_Exception *e;
 {