//Nouse skiped
// test for holdkey
if(keybuf.keys!=keys.keys) {
20c: 20 91 fa 00 lds r18, 0x00FA
210: 30 91 fb 00 lds r19, 0x00FB
214: 40 91 fc 00 lds r20, 0x00FC
218: 50 91 fd 00 lds r21, 0x00FD
21c: 80 91 04 01 lds r24, 0x0104
220: 90 91 05 01 lds r25, 0x0105
224: a0 91 06 01 lds r26, 0x0106
228: b0 91 07 01 lds r27, 0x0107
22c: 28 17 cp r18, r24
22e: 39 07 cpc r19, r25
230: 4a 07 cpc r20, r26
232: 5b 07 cpc r21, r27
234: e1 f0 breq .+56 ; 0x26e <__stack+0xf>
is illegal
// test for presskey
if(keybuf.keys) {
26e: 80 91 fa 00 lds r24, 0x00FA
272: 90 91 fb 00 lds r25, 0x00FB
276: a0 91 fc 00 lds r26, 0x00FC
27a: b0 91 fd 00 lds r27, 0x00FD
27e: 00 97 sbiw r24, 0x00 ; 0
280: a1 05 cpc r26, r1
282: b1 05 cpc r27, r1
284: 79 f1 breq .+94 ; 0x2e4 <__stack+0x85>
is illegal
[u...@localhost Documents]$ cat bugif.c
#include <avr/io.h>
int main(void) {
volatile uint16_t a=8,b=7;
a++;
b++;
if(a==b) a++;
if(b) b++;
return 0;
}
[u...@localhost Documents]$ avr-gcc -Wall -Werror -g -Os -o bugif.elf -mint8
-I/usr/include/avr -mmcu=atmega8535 bugif.c; avr-objdump -S -h bugif.elf
>bugif.S
8c: 8b 83 std Y+3, r24 ; 0x03
if(a==b) a++;
8e: 29 81 ldd r18, Y+1 ; 0x01
90: 3a 81 ldd r19, Y+2 ; 0x02
92: 8b 81 ldd r24, Y+3 ; 0x03
94: 9c 81 ldd r25, Y+4 ; 0x04
96: 28 17 cp r18, r24
98: 39 07 cpc r19, r25
9a: 29 f4 brne .+10 ; 0xa6 <main+0x44>
is illegal
9c: 89 81 ldd r24, Y+1 ; 0x01
9e: 9a 81 ldd r25, Y+2 ; 0x02
a0: 01 96 adiw r24, 0x01 ; 1
a2: 9a 83 std Y+2, r25 ; 0x02
a4: 89 83 std Y+1, r24 ; 0x01
if(b) b++;
a6: 8b 81 ldd r24, Y+3 ; 0x03
a8: 9c 81 ldd r25, Y+4 ; 0x04
aa: 89 2b or r24, r25
ac: 29 f0 breq .+10 ; 0xb8 <main+0x56>
is right
ae: 8b 81 ldd r24, Y+3 ; 0x03
b0: 9c 81 ldd r25, Y+4 ; 0x04
b2: 01 96 adiw r24, 0x01 ; 1
b4: 9c 83 std Y+4, r25 ; 0x04
b6: 8b 83 std Y+3, r24 ; 0x03
return 0;
c:\WinAVR-20100110\bin>avr-gcc -v
Using built-in specs.
Target: avr
Configured with: ../gcc-4.3.3/configure --enable-win32-registry=WinAVR-20100110
--with-gmp=/usr/local --with-mpfr=/usr/local --prefix=/c/WinAVR --target=avr
--e
nable-languages=c,c++,objc --with-dwarf2 --enable-doc --disable-shared
--disable
-libada --disable-libssp --disable-nls --with-pkgversion='WinAVR 20100110'
--wit
h-bugurl='URL:http://sourceforge.net/tracker/?atid=520074&group_id=68108&func=br
owse'
Thread model: single
gcc version 4.3.3 (WinAVR 20100110)
--
Summary: Illegal translation for IF operator
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: kharpost at rambler dot ru
GCC build triplet: avr
GCC host triplet: i386
GCC target triplet: avr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42976
