gcc-2.95pre: Virtual array reg_single_usage element 184 out of bounds, at ../../../egcsm/gcc/loop.c:6902

[Franz Sirl]

Am Sat, 22 May 1999 schrieb Franz Sirl:
>Hi,
>
>gcc-2.95pre on powerpc-linux-gnu produces this error message:
>
>decode.c:42: Virtual array reg_single_usage element 184 out of bounds, at ../../../egcsm/gcc/loop.c:6902

This seems to be a simple oversight, in strength_reduce() one VARRAY_GROW was
missing.

The attached patch fixes this.

Franz.

	* loop.c (strength_reduce): grow the reg_single_usage varray too


Index: loop.c
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/loop.c,v
retrieving revision 1.156
diff -u -p -r1.156 loop.c
--- loop.c	1999/05/13 00:57:05	1.156
+++ loop.c	1999/05/23 18:48:55
@@ -4198,6 +4198,7 @@ strength_reduce (scan_start, end, loop_t
 		  VARRAY_GROW (set_in_loop, nregs);
 		  VARRAY_GROW (n_times_set, nregs);
 		  VARRAY_GROW (may_not_optimize, nregs);
+		  VARRAY_GROW (reg_single_usage, nregs);
 		}
     
 	      if (! validate_change (next->insn, next->location, add_val, 0))