[avr-libc-dev] [patch #8902] Xmega's PROTECTED_WRITE is incorrect for IO registers whose address is more than one byte

[Pitchumani]

Follow-up Comment #1, patch #8902 (project avr-libc):

Testcase: protected_write.c
1 #include <avr/io.h>
2 #include <avr/xmega.h>
3
4 void main ()
5 {
6   _PROTECTED_WRITE(RTC_CTRL, RTC_PRESCALER_gm);
7 }

Compiler output:
$ avr-gcc -mmcu=atxmega128b1 -c protected_write.c
In file included from /install/avr/include/avr/io.h:570:0,
                 from protected_write.c:1:
protected_write.c: In function 'main':
protected_write.c:6:3: error: impossible constraint in 'asm'
   _PROTECTED_WRITE(RTC_CTRL, RTC_PRESCALER_gm);
   ^


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