[Patch]: more fixes for encode-[2-4].m testcases

["Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>]

I'm still seeing failures for encode-[2-4].m in the objc testsuite on
mips-sgi-irix6.5, e.g. see:
http://gcc.gnu.org/ml/gcc-testresults/2004-02/msg00054.html

By following the discussion from the last round of fixes on these
tests, I was able to figure out myself this time what's going wrong.

Essentially since `char' is unsigned by default on irix, we're getting
'C' instead of 'c' as per the algorithm in objc-act.c:encode_type().

Fixed with the patch below.  Tested by recompiling each testcase and
ensuring they ran to completion without aborting.

Ok for mainline and 3.4?

		Thanks,
		--Kaveh

2004-02-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* objc.dg/encode-2.m, objc.dg/encode-3.m, objc.dg/encode-4.m: Fix
	tests for systems where `char' is unsigned by default.

diff -rup orig/egcc-CVS20040201/gcc/testsuite/objc.dg/encode-2.m egcc-CVS20040201/gcc/testsuite/objc.dg/encode-2.m
--- orig/egcc-CVS20040201/gcc/testsuite/objc.dg/encode-2.m	Wed Jan 28 20:02:24 2004
+++ egcc-CVS20040201/gcc/testsuite/objc.dg/encode-2.m	Sun Feb  1 20:21:46 2004
@@ -39,7 +39,7 @@ typedef struct { float x, y; } XXPoint;
 typedef struct { float width, height; } XXSize;
 typedef struct _XXRect { XXPoint origin; XXSize size; } XXRect;
 -(id)setRect:(XXRect)r withInt:(int)i;
--(void) char:(char)c float:(float)f double:(double)d long:(long)l;
+-(void) char:(signed char)c float:(float)f double:(double)d long:(long)l;
 @end
 
 XXRect my_rect;
@@ -57,7 +57,7 @@ unsigned offs1, offs2, offs3, offs4, off
   CHECK_IF(offs == offs1); 
   return nil; 
 }
--(void) char:(char)c float:(float)f double:(double)d long:(long)l {
+-(void) char:(signed char)c float:(float)f double:(double)d long:(long)l {
   unsigned offs = sizeof(self);
   CHECK_IF(offs == offs3);
   offs += sizeof(_cmd);
diff -rup orig/egcc-CVS20040201/gcc/testsuite/objc.dg/encode-3.m egcc-CVS20040201/gcc/testsuite/objc.dg/encode-3.m
--- orig/egcc-CVS20040201/gcc/testsuite/objc.dg/encode-3.m	Wed Jan 28 20:02:25 2004
+++ egcc-CVS20040201/gcc/testsuite/objc.dg/encode-3.m	Sun Feb  1 20:24:19 2004
@@ -28,7 +28,7 @@ union __XXAngle { unsigned int alpha, be
 typedef struct { float x, y; union __XXAngle a; } XXPoint;
 typedef struct { double width, height; } XXSize;
 typedef struct _XXRect { XXPoint origin; XXSize size; struct _XXRect *next; } XXRect;
-- (void) char:(char)c float:(float)f double:(double)d unsigned:(unsigned)u short:(short)s long:(long)l;
+- (void) char:(signed char)c float:(float)f double:(double)d unsigned:(unsigned)u short:(short)s long:(long)l;
 - (void *)setRect:(XXRect)r withBool:(ProtoBool)b withInt:(int)i;
 + (Enum *)getEnum:(XXPoint *)pt enum:(enum Enum)e bool:(ObjCBool)b;
 + (ProtoBool **)getBool:(ObjCBool **)b;
diff -rup orig/egcc-CVS20040201/gcc/testsuite/objc.dg/encode-4.m egcc-CVS20040201/gcc/testsuite/objc.dg/encode-4.m
--- orig/egcc-CVS20040201/gcc/testsuite/objc.dg/encode-4.m	Wed Sep 24 21:26:00 2003
+++ egcc-CVS20040201/gcc/testsuite/objc.dg/encode-4.m	Sun Feb  1 20:29:12 2004
@@ -31,7 +31,7 @@ struct Nested {
 };
 
 @interface Int1: Object {
-  char a, b;
+  signed char a, b;
   Int2 *int2;
   struct Nested nested;
 }