屑俺日記

☆ 120GBのイメージはSSDにぴったり

昨日とは逆に、120GBのイメージをSSDにddrescueする。

$ time sudo ddrescue -f 120.img /dev/sdb log
GNU ddrescue 1.23
Press Ctrl-C to interrupt
     ipos:  120034 MB, non-trimmed:        0 B,  current rate:  29777 kB/s
     opos:  120034 MB, non-scraped:        0 B,  average rate:  69665 kB/s
non-tried:        0 B,  bad-sector:        0 B,    error rate:       0 B/s
  rescued:  120034 MB,   bad areas:        0,        run time:     28m 42s
pct rescued:  100.00%, read errors:        0,  remaining time:         n/a
                              time since last successful read:         n/a
Finished
 
real    28m49.414s
user    0m6.435s
sys     2m55.202s

☆ 範囲外になるとき

RasPicoのintも32ビットであることを確認していた。

int/build $ make -j4
[  5%] Performing build step for 'ELF2UF2Build'
[  5%] Built target bs2_default
[  8%] Built target bs2_default_padded_checksummed_asm
[100%] Built target elf2uf2
[ 10%] No install step for 'ELF2UF2Build'
[ 11%] Completed 'ELF2UF2Build'
[ 20%] Built target ELF2UF2Build
Scanning dependencies of target int
[ 22%] Building C object CMakeFiles/int.dir/int.c.obj
/home/pi/pico/pico/int/int.c: In function 'main':
/home/pi/pico/pico/int/int.c:12:4: warning: iteration 3 invokes undefined behavior [-Waggressive-loop-optimizations]
   i+=1;
   ~^~~
/home/pi/pico/pico/int/int.c:10:2:note: within this loop
  for(j=1; j < 6; j++) {
  ^~~
[ 23%] Linking CXX executable int.elf
[100%] Built target int

int型の範囲外になるようだと、こんな警告が出るようだった。