URL:
<http://savannah.nongnu.org/bugs/?45151>
Summary: #define _ASM_SFR_COMPAT 1 and #include <avr/power.h>
results in build error
Project: AVR C Runtime Library
Submitted by: None
Submitted on: Wed 20 May 2015 02:49:05 PM UTC
Category: Header
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Percent Complete: 0%
Assigned to: None
Originator Email: urja...@gmail.com
Open/Closed: Open
Discussion Lock: Any
Release: 1.8.0
Fixed Release: None
_______________________________________________________
Details:
Note: release field is incorrect, but there isnt one for newest svn.
I was testing current trunk avr-libc + current gcc 5 branch
(20.5.2015, avr-libc r2475) against my projects when i found this.
I simplified it as:
$ cat simple.c
#define _SFR_ASM_COMPAT 1
#include <avr/io.h>
#include <avr/power.h>
void main(void) { }
$ avr-gcc -mmcu=atmega328p -Os simple.c
In file included from simple.c:3:0:
/home/urjaman/avrtc-test/avr/include/avr/power.h: In function
'__power_all_enable':
/home/urjaman/avrtc-test/avr/include/avr/power.h:1152:9: error: lvalue
required as left operand of assignment
PRR &= (uint8_t)~(__AVR_HAVE_PRR);
^
/home/urjaman/avrtc-test/avr/include/avr/power.h: In function
'__power_all_disable':
/home/urjaman/avrtc-test/avr/include/avr/power.h:1201:9: error: lvalue
required as left operand of assignment
PRR |= (uint8_t)(__AVR_HAVE_PRR);
^
I think this might have been officially not supported, but it used to work
without error.
I worked around by not including <avr/power.h> in the module that uses
_ASM_SFR_COMPAT (has a few variable definitions and an ASM ISR and some C
helpers to interface with the variables (and thus the ISR)), but it is
slightly annoying for a project where all system includes used to in one
main.h (another .c needed to include <avr/power.h> then).
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