URL:
<http://savannah.nongnu.org/bugs/?26284>
Summary: boot_lock_fuse_bits_get does not compile under gcc
4.3.X
Project: AVR C Runtime Library
Submitted by: schickb
Submitted on: Wed 22 Apr 2009 07:17:50 AM GMT
Category: Library
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: libc code
Status: None
Percent Complete: 0%
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Release: 1.6.5
Fixed Release: None
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Details:
The 'boot_lock_fuse_bits_get' macro in <avr/boot.h> causes a compile error
when passed a non-constant argument. Building the code below in a fairly
recent version of GCC (like 4.3.2) produces the error:
#include <avr/io.h>
#include <avr/boot.h>
#include <stdint.h>
void main()
{
uint16_t addr = 0x0003;
return boot_lock_fuse_bits_get(addr);
}
The error will be something like:
warning: asm operand 3 probably doesn't match constraints
error: impossible constraint in 'asm'
The problem seems to be the use of the "M" constraint in the macro. I believe
the attached patch should fix the issue, and is a bit simpler as well.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Wed 22 Apr 2009 07:17:50 AM GMT Name: boot_lock_fuse_bits_get.patch
Size: 1kB By: schickb
<http://savannah.nongnu.org/bugs/download.php?file_id=17992>
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<http://savannah.nongnu.org/bugs/?26284>
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