Patch: ICE: compiling cp/new1.cc -DL_op_newnt

[Donn Terry]

===================================================
Donn Terry                  mailto:donn@interix.com
Softway Systems, Inc.        http://www.interix.com
2850 McClelland Dr, Ste. 1800   Ft.Collins CO 80525
Tel: +1-970-204-9900           Fax: +1-970-204-9951
===================================================
ICE: compiling cp/new1.cc -DL_op_newnt -- take 2.

Cause: start_catch_handler() (except.c) calls force_reg() on variable
rtime_address, which came from expand_expr, which did not honor
the *suggestion* of Pmode when expanding rtime, which is an in-memory
pointer.  rtime is built by build_eh_type_type_ref(), which creates
it as ptr_type_node, which is an in-memory address type as far as
I can tell.

Fix:
Force the mode to Pmode, regardless.

ChangeLog

	* except.c (start_catch_hadler): Be sure rtime_address is Pmode
	if POINTERS_EXTEND_UNSIGNED.

	  
diff -urP egcs.source.old/gcc/except.c egcs.source/gcc/except.c
--- egcs.source.old/gcc/except.c	Thu Apr 15 09:19:47 1999
+++ egcs.source/gcc/except.c	Thu Apr 15 12:47:09 1999
@@ -1760,6 +1760,9 @@ start_catch_handler (rtime)
       catchstack.top->entry->false_label = gen_exception_label ();
 
       rtime_address = expand_expr (rtime, NULL_RTX, Pmode, EXPAND_INITIALIZER);
+#ifdef POINTERS_EXTEND_UNSIGNED
+      rtime_address = convert_memory_address(Pmode, rtime_address);
+#endif
       rtime_address = force_reg (Pmode, rtime_address);
 
       /* Now issue the call, and branch around handler if needed */