[Patch,AVR]; PR52499 fix MODE_CODE_BASE_REG_CLASS type

[Georg-Johann Lay]

This fixes a problem if avr-gcc is built with C++

Lightly tested.

Ok for trunk?

Johann

        PR target/52499
        * config/avr/avr.c (avr_mode_code_base_reg_class): Change return
        type from reg_class_t to enum reg_class.
        * config/avr/avr-protos.h (avr_mode_code_base_reg_class): Ditto.

Index: config/avr/avr-protos.h
===================================================================
--- config/avr/avr-protos.h	(revision 185099)
+++ config/avr/avr-protos.h	(working copy)
@@ -115,7 +115,7 @@ extern int avr_simplify_comparison_p (en
 extern RTX_CODE avr_normalize_condition (RTX_CODE condition);
 extern void out_shift_with_cnt (const char *templ, rtx insn,
 				rtx operands[], int *len, int t_len);
-extern reg_class_t avr_mode_code_base_reg_class (enum machine_mode, addr_space_t, RTX_CODE, RTX_CODE);
+extern enum reg_class avr_mode_code_base_reg_class (enum machine_mode, addr_space_t, RTX_CODE, RTX_CODE);
 extern bool avr_regno_mode_code_ok_for_base_p (int, enum machine_mode, addr_space_t, RTX_CODE, RTX_CODE);
 extern rtx avr_incoming_return_addr_rtx (void);
 extern rtx avr_legitimize_reload_address (rtx*, enum machine_mode, int, int, int, int, rtx (*)(rtx,int));
Index: config/avr/avr.c
===================================================================
--- config/avr/avr.c	(revision 185100)
+++ config/avr/avr.c	(working copy)
@@ -8983,7 +8983,7 @@ avr_hard_regno_mode_ok (int regno, enum
 
 /* Implement `MODE_CODE_BASE_REG_CLASS'.  */
 
-reg_class_t
+enum reg_class
 avr_mode_code_base_reg_class (enum machine_mode mode ATTRIBUTE_UNUSED,
                               addr_space_t as, RTX_CODE outer_code,
                               RTX_CODE index_code ATTRIBUTE_UNUSED)